Improve builder name generation

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

__tests__/buildx.test.ts

@@ -41,14 +41,6 @@ describe('platforms', () => {
   );
 });
 
-describe('countBuilders', () => {
-  it('valid', async () => {
-    const countBuilders = await buildx.countBuilders();
-    console.log(`countBuilders: ${countBuilders}`);
-    expect(countBuilders).toBeGreaterThan(0);
-  }, 100000);
-});
-
 describe('install', () => {
   const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'setup-buildx-'));
   it('acquires v0.2.2 version of buildx', async () => {

dist/index.js

@@ -534,7 +534,7 @@ function run() {
             }
             const buildxVersion = yield buildx.getVersion();
             core.info(`📣 Buildx version: ${buildxVersion}`);
-            const builderName = inputs.driver == 'docker' ? 'default' : `builder-${process.env.GITHUB_JOB}-${(yield buildx.countBuilders()) + 1}`;
+            const builderName = inputs.driver == 'docker' ? 'default' : `builder-${__webpack_require__(840).v4()}`;
             core.setOutput('name', builderName);
             stateHelper.setBuilderName(builderName);
             if (inputs.driver !== 'docker') {
@@ -598,6 +598,73 @@ else {
 
 /***/ }),
 
+/***/ 120:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _v = _interopRequireDefault(__webpack_require__(998));
+
+var _sha = _interopRequireDefault(__webpack_require__(274));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+const v5 = (0, _v.default)('v5', 0x50, _sha.default);
+var _default = v5;
+exports.default = _default;
+
+/***/ }),
+
+/***/ 122:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _rng = _interopRequireDefault(__webpack_require__(807));
+
+var _stringify = _interopRequireDefault(__webpack_require__(950));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function v4(options, buf, offset) {
+  options = options || {};
+
+  const rnds = options.random || (options.rng || _rng.default)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
+
+
+  rnds[6] = rnds[6] & 0x0f | 0x40;
+  rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided
+
+  if (buf) {
+    offset = offset || 0;
+
+    for (let i = 0; i < 16; ++i) {
+      buf[offset + i] = rnds[i];
+    }
+
+    return buf;
+  }
+
+  return (0, _stringify.default)(rnds);
+}
+
+var _default = v4;
+exports.default = _default;
+
+/***/ }),
+
 /***/ 123:
 /***/ (function(module, __unusedexports, __webpack_require__) {
 
@@ -1835,6 +1902,51 @@ if (process.env.NODE_DEBUG && /\btunnel\b/.test(process.env.NODE_DEBUG)) {
 exports.debug = debug; // for test
 
 
+/***/ }),
+
+/***/ 269:
+/***/ (function(module, __unusedexports, __webpack_require__) {
+
+// Unique ID creation requires a high quality random # generator.  In node.js
+// this is pretty straight-forward - we use the crypto API.
+
+var crypto = __webpack_require__(373);
+
+module.exports = function nodeRNG() {
+  return crypto.randomBytes(16);
+};
+
+
+/***/ }),
+
+/***/ 274:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _crypto = _interopRequireDefault(__webpack_require__(373));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function sha1(bytes) {
+  if (Array.isArray(bytes)) {
+    bytes = Buffer.from(bytes);
+  } else if (typeof bytes === 'string') {
+    bytes = Buffer.from(bytes, 'utf8');
+  }
+
+  return _crypto.default.createHash('sha1').update(bytes).digest();
+}
+
+var _default = sha1;
+exports.default = _default;
+
 /***/ }),
 
 /***/ 278:
@@ -2006,7 +2118,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
     });
 };
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.install = exports.platforms = exports.countBuilders = exports.isAvailable = exports.parseVersion = exports.getVersion = void 0;
+exports.install = exports.platforms = exports.isAvailable = exports.parseVersion = exports.getVersion = void 0;
 const fs = __importStar(__webpack_require__(747));
 const path = __importStar(__webpack_require__(622));
 const semver = __importStar(__webpack_require__(383));
@@ -2048,17 +2160,6 @@ function isAvailable() {
     });
 }
 exports.isAvailable = isAvailable;
-function countBuilders() {
-    return __awaiter(this, void 0, void 0, function* () {
-        return yield exec.exec(`docker`, ['buildx', 'ls'], true).then(res => {
-            if (res.stderr != '' && !res.success) {
-                throw new Error(`Cannot list builders: ${res.stderr}`);
-            }
-            return (res.stdout.trim().split(`\n`).length - 1) / 2;
-        });
-    });
-}
-exports.countBuilders = countBuilders;
 function platforms() {
     return __awaiter(this, void 0, void 0, function* () {
         return yield exec.exec(`docker`, ['buildx', 'inspect'], true).then(res => {
@@ -2204,6 +2305,21 @@ const ltr = (version, range, options) => outside(version, range, '<', options)
 module.exports = ltr
 
 
+/***/ }),
+
+/***/ 332:
+/***/ (function(__unusedmodule, exports) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _default = '00000000-0000-0000-0000-000000000000';
+exports.default = _default;
+
 /***/ }),
 
 /***/ 351:
@@ -2370,6 +2486,29 @@ module.exports = {
 }
 
 
+/***/ }),
+
+/***/ 409:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _v = _interopRequireDefault(__webpack_require__(998));
+
+var _md = _interopRequireDefault(__webpack_require__(569));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+const v3 = (0, _v.default)('v3', 0x30, _md.default);
+var _default = v3;
+exports.default = _default;
+
 /***/ }),
 
 /***/ 413:
@@ -2960,6 +3099,42 @@ const coerce = (version, options) => {
 module.exports = coerce
 
 
+/***/ }),
+
+/***/ 468:
+/***/ (function(module, __unusedexports, __webpack_require__) {
+
+var rng = __webpack_require__(269);
+var bytesToUuid = __webpack_require__(836);
+
+function v4(options, buf, offset) {
+  var i = buf && offset || 0;
+
+  if (typeof(options) == 'string') {
+    buf = options === 'binary' ? new Array(16) : null;
+    options = null;
+  }
+  options = options || {};
+
+  var rnds = options.random || (options.rng || rng)();
+
+  // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
+  rnds[6] = (rnds[6] & 0x0f) | 0x40;
+  rnds[8] = (rnds[8] & 0x3f) | 0x80;
+
+  // Copy bytes to buffer, if provided
+  if (buf) {
+    for (var ii = 0; ii < 16; ++ii) {
+      buf[i + ii] = rnds[ii];
+    }
+  }
+
+  return buf || bytesToUuid(rnds);
+}
+
+module.exports = v4;
+
+
 /***/ }),
 
 /***/ 473:
@@ -5129,6 +5304,36 @@ function coerce (version, options) {
 }
 
 
+/***/ }),
+
+/***/ 569:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _crypto = _interopRequireDefault(__webpack_require__(373));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function md5(bytes) {
+  if (Array.isArray(bytes)) {
+    bytes = Buffer.from(bytes);
+  } else if (typeof bytes === 'string') {
+    bytes = Buffer.from(bytes, 'utf8');
+  }
+
+  return _crypto.default.createHash('md5').update(bytes).digest();
+}
+
+var _default = md5;
+exports.default = _default;
+
 /***/ }),
 
 /***/ 579:
@@ -5161,6 +5366,34 @@ const maxSatisfying = (versions, range, options) => {
 module.exports = maxSatisfying
 
 
+/***/ }),
+
+/***/ 595:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _validate = _interopRequireDefault(__webpack_require__(783));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function version(uuid) {
+  if (!(0, _validate.default)(uuid)) {
+    throw TypeError('Invalid UUID');
+  }
+
+  return parseInt(uuid.substr(14, 1), 16);
+}
+
+var _default = version;
+exports.default = _default;
+
 /***/ }),
 
 /***/ 601:
@@ -5197,6 +5430,120 @@ module.exports = require("path");
 
 /***/ }),
 
+/***/ 628:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _rng = _interopRequireDefault(__webpack_require__(807));
+
+var _stringify = _interopRequireDefault(__webpack_require__(950));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+// **`v1()` - Generate time-based UUID**
+//
+// Inspired by https://github.com/LiosK/UUID.js
+// and http://docs.python.org/library/uuid.html
+let _nodeId;
+
+let _clockseq; // Previous uuid creation time
+
+
+let _lastMSecs = 0;
+let _lastNSecs = 0; // See https://github.com/uuidjs/uuid for API details
+
+function v1(options, buf, offset) {
+  let i = buf && offset || 0;
+  const b = buf || new Array(16);
+  options = options || {};
+  let node = options.node || _nodeId;
+  let clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq; // node and clockseq need to be initialized to random values if they're not
+  // specified.  We do this lazily to minimize issues related to insufficient
+  // system entropy.  See #189
+
+  if (node == null || clockseq == null) {
+    const seedBytes = options.random || (options.rng || _rng.default)();
+
+    if (node == null) {
+      // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
+      node = _nodeId = [seedBytes[0] | 0x01, seedBytes[1], seedBytes[2], seedBytes[3], seedBytes[4], seedBytes[5]];
+    }
+
+    if (clockseq == null) {
+      // Per 4.2.2, randomize (14 bit) clockseq
+      clockseq = _clockseq = (seedBytes[6] << 8 | seedBytes[7]) & 0x3fff;
+    }
+  } // UUID timestamps are 100 nano-second units since the Gregorian epoch,
+  // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so
+  // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'
+  // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.
+
+
+  let msecs = options.msecs !== undefined ? options.msecs : Date.now(); // Per 4.2.1.2, use count of uuid's generated during the current clock
+  // cycle to simulate higher resolution clock
+
+  let nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1; // Time since last uuid creation (in msecs)
+
+  const dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000; // Per 4.2.1.2, Bump clockseq on clock regression
+
+  if (dt < 0 && options.clockseq === undefined) {
+    clockseq = clockseq + 1 & 0x3fff;
+  } // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
+  // time interval
+
+
+  if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {
+    nsecs = 0;
+  } // Per 4.2.1.2 Throw error if too many uuids are requested
+
+
+  if (nsecs >= 10000) {
+    throw new Error("uuid.v1(): Can't create more than 10M uuids/sec");
+  }
+
+  _lastMSecs = msecs;
+  _lastNSecs = nsecs;
+  _clockseq = clockseq; // Per 4.1.4 - Convert from unix epoch to Gregorian epoch
+
+  msecs += 12219292800000; // `time_low`
+
+  const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
+  b[i++] = tl >>> 24 & 0xff;
+  b[i++] = tl >>> 16 & 0xff;
+  b[i++] = tl >>> 8 & 0xff;
+  b[i++] = tl & 0xff; // `time_mid`
+
+  const tmh = msecs / 0x100000000 * 10000 & 0xfffffff;
+  b[i++] = tmh >>> 8 & 0xff;
+  b[i++] = tmh & 0xff; // `time_high_and_version`
+
+  b[i++] = tmh >>> 24 & 0xf | 0x10; // include version
+
+  b[i++] = tmh >>> 16 & 0xff; // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
+
+  b[i++] = clockseq >>> 8 | 0x80; // `clock_seq_low`
+
+  b[i++] = clockseq & 0xff; // `node`
+
+  for (let n = 0; n < 6; ++n) {
+    b[i + n] = node[n];
+  }
+
+  return buf || (0, _stringify.default)(b);
+}
+
+var _default = v1;
+exports.default = _default;
+
+/***/ }),
+
 /***/ 631:
 /***/ (function(module) {
 
@@ -5718,39 +6065,6 @@ const toComparators = (range, options) =>
 module.exports = toComparators
 
 
-/***/ }),
-
-/***/ 707:
-/***/ (function(module) {
-
-/**
- * Convert array of 16 byte values to UUID string format of the form:
- * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
- */
-var byteToHex = [];
-for (var i = 0; i < 256; ++i) {
-  byteToHex[i] = (i + 0x100).toString(16).substr(1);
-}
-
-function bytesToUuid(buf, offset) {
-  var i = offset || 0;
-  var bth = byteToHex;
-  // join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4
-  return ([
-    bth[buf[i++]], bth[buf[i++]],
-    bth[buf[i++]], bth[buf[i++]], '-',
-    bth[buf[i++]], bth[buf[i++]], '-',
-    bth[buf[i++]], bth[buf[i++]], '-',
-    bth[buf[i++]], bth[buf[i++]], '-',
-    bth[buf[i++]], bth[buf[i++]],
-    bth[buf[i++]], bth[buf[i++]],
-    bth[buf[i++]], bth[buf[i++]]
-  ]).join('');
-}
-
-module.exports = bytesToUuid;
-
-
 /***/ }),
 
 /***/ 717:
@@ -6147,6 +6461,58 @@ const validRange = (range, options) => {
 module.exports = validRange
 
 
+/***/ }),
+
+/***/ 746:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _validate = _interopRequireDefault(__webpack_require__(783));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function parse(uuid) {
+  if (!(0, _validate.default)(uuid)) {
+    throw TypeError('Invalid UUID');
+  }
+
+  let v;
+  const arr = new Uint8Array(16); // Parse ########-....-....-....-............
+
+  arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;
+  arr[1] = v >>> 16 & 0xff;
+  arr[2] = v >>> 8 & 0xff;
+  arr[3] = v & 0xff; // Parse ........-####-....-....-............
+
+  arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;
+  arr[5] = v & 0xff; // Parse ........-....-####-....-............
+
+  arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;
+  arr[7] = v & 0xff; // Parse ........-....-....-####-............
+
+  arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;
+  arr[9] = v & 0xff; // Parse ........-....-....-....-############
+  // (Use "/" to avoid 32-bit truncation when bit-shifting high-order bytes)
+
+  arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;
+  arr[11] = v / 0x100000000 & 0xff;
+  arr[12] = v >>> 24 & 0xff;
+  arr[13] = v >>> 16 & 0xff;
+  arr[14] = v >>> 8 & 0xff;
+  arr[15] = v & 0xff;
+  return arr;
+}
+
+var _default = parse;
+exports.default = _default;
+
 /***/ }),
 
 /***/ 747:
@@ -6218,6 +6584,30 @@ exports.exec = (command, args = [], silent) => __awaiter(void 0, void 0, void 0,
 
 /***/ }),
 
+/***/ 783:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _regex = _interopRequireDefault(__webpack_require__(814));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function validate(uuid) {
+  return typeof uuid === 'string' && _regex.default.test(uuid);
+}
+
+var _default = validate;
+exports.default = _default;
+
+/***/ }),
+
 /***/ 784:
 /***/ (function(__unusedmodule, exports, __webpack_require__) {
 
@@ -6253,7 +6643,7 @@ const httpm = __importStar(__webpack_require__(936));
 const semver = __importStar(__webpack_require__(562));
 const stream = __importStar(__webpack_require__(413));
 const util = __importStar(__webpack_require__(669));
-const v4_1 = __importDefault(__webpack_require__(824));
+const v4_1 = __importDefault(__webpack_require__(468));
 const exec_1 = __webpack_require__(514);
 const assert_1 = __webpack_require__(357);
 const retry_helper_1 = __webpack_require__(279);
@@ -6857,6 +7247,52 @@ const compareLoose = (a, b) => compare(a, b, true)
 module.exports = compareLoose
 
 
+/***/ }),
+
+/***/ 807:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = rng;
+
+var _crypto = _interopRequireDefault(__webpack_require__(373));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+const rnds8Pool = new Uint8Array(256); // # of random values to pre-allocate
+
+let poolPtr = rnds8Pool.length;
+
+function rng() {
+  if (poolPtr > rnds8Pool.length - 16) {
+    _crypto.default.randomFillSync(rnds8Pool);
+
+    poolPtr = 0;
+  }
+
+  return rnds8Pool.slice(poolPtr, poolPtr += 16);
+}
+
+/***/ }),
+
+/***/ 814:
+/***/ (function(__unusedmodule, exports) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _default = /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;
+exports.default = _default;
+
 /***/ }),
 
 /***/ 818:
@@ -6864,42 +7300,6 @@ module.exports = compareLoose
 
 module.exports = require("tls");
 
-/***/ }),
-
-/***/ 824:
-/***/ (function(module, __unusedexports, __webpack_require__) {
-
-var rng = __webpack_require__(859);
-var bytesToUuid = __webpack_require__(707);
-
-function v4(options, buf, offset) {
-  var i = buf && offset || 0;
-
-  if (typeof(options) == 'string') {
-    buf = options === 'binary' ? new Array(16) : null;
-    options = null;
-  }
-  options = options || {};
-
-  var rnds = options.random || (options.rng || rng)();
-
-  // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
-  rnds[6] = (rnds[6] & 0x0f) | 0x40;
-  rnds[8] = (rnds[8] & 0x3f) | 0x80;
-
-  // Copy bytes to buffer, if provided
-  if (buf) {
-    for (var ii = 0; ii < 16; ++ii) {
-      buf[i + ii] = rnds[ii];
-    }
-  }
-
-  return buf || bytesToUuid(rnds);
-}
-
-module.exports = v4;
-
-
 /***/ }),
 
 /***/ 828:
@@ -7448,6 +7848,125 @@ const minSatisfying = (versions, range, options) => {
 module.exports = minSatisfying
 
 
+/***/ }),
+
+/***/ 836:
+/***/ (function(module) {
+
+/**
+ * Convert array of 16 byte values to UUID string format of the form:
+ * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
+ */
+var byteToHex = [];
+for (var i = 0; i < 256; ++i) {
+  byteToHex[i] = (i + 0x100).toString(16).substr(1);
+}
+
+function bytesToUuid(buf, offset) {
+  var i = offset || 0;
+  var bth = byteToHex;
+  // join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4
+  return ([
+    bth[buf[i++]], bth[buf[i++]],
+    bth[buf[i++]], bth[buf[i++]], '-',
+    bth[buf[i++]], bth[buf[i++]], '-',
+    bth[buf[i++]], bth[buf[i++]], '-',
+    bth[buf[i++]], bth[buf[i++]], '-',
+    bth[buf[i++]], bth[buf[i++]],
+    bth[buf[i++]], bth[buf[i++]],
+    bth[buf[i++]], bth[buf[i++]]
+  ]).join('');
+}
+
+module.exports = bytesToUuid;
+
+
+/***/ }),
+
+/***/ 840:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "v1", {
+  enumerable: true,
+  get: function () {
+    return _v.default;
+  }
+});
+Object.defineProperty(exports, "v3", {
+  enumerable: true,
+  get: function () {
+    return _v2.default;
+  }
+});
+Object.defineProperty(exports, "v4", {
+  enumerable: true,
+  get: function () {
+    return _v3.default;
+  }
+});
+Object.defineProperty(exports, "v5", {
+  enumerable: true,
+  get: function () {
+    return _v4.default;
+  }
+});
+Object.defineProperty(exports, "NIL", {
+  enumerable: true,
+  get: function () {
+    return _nil.default;
+  }
+});
+Object.defineProperty(exports, "version", {
+  enumerable: true,
+  get: function () {
+    return _version.default;
+  }
+});
+Object.defineProperty(exports, "validate", {
+  enumerable: true,
+  get: function () {
+    return _validate.default;
+  }
+});
+Object.defineProperty(exports, "stringify", {
+  enumerable: true,
+  get: function () {
+    return _stringify.default;
+  }
+});
+Object.defineProperty(exports, "parse", {
+  enumerable: true,
+  get: function () {
+    return _parse.default;
+  }
+});
+
+var _v = _interopRequireDefault(__webpack_require__(628));
+
+var _v2 = _interopRequireDefault(__webpack_require__(409));
+
+var _v3 = _interopRequireDefault(__webpack_require__(122));
+
+var _v4 = _interopRequireDefault(__webpack_require__(120));
+
+var _nil = _interopRequireDefault(__webpack_require__(332));
+
+var _version = _interopRequireDefault(__webpack_require__(595));
+
+var _validate = _interopRequireDefault(__webpack_require__(783));
+
+var _stringify = _interopRequireDefault(__webpack_require__(950));
+
+var _parse = _interopRequireDefault(__webpack_require__(746));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
 /***/ }),
 
 /***/ 842:
@@ -7537,21 +8056,6 @@ const clean = (version, options) => {
 module.exports = clean
 
 
-/***/ }),
-
-/***/ 859:
-/***/ (function(module, __unusedexports, __webpack_require__) {
-
-// Unique ID creation requires a high quality random # generator.  In node.js
-// this is pretty straight-forward - we use the crypto API.
-
-var crypto = __webpack_require__(373);
-
-module.exports = function nodeRNG() {
-  return crypto.randomBytes(16);
-};
-
-
 /***/ }),
 
 /***/ 863:
@@ -8391,6 +8895,52 @@ class HttpClient {
 exports.HttpClient = HttpClient;
 
 
+/***/ }),
+
+/***/ 950:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _validate = _interopRequireDefault(__webpack_require__(783));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Convert array of 16 byte values to UUID string format of the form:
+ * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
+ */
+const byteToHex = [];
+
+for (let i = 0; i < 256; ++i) {
+  byteToHex.push((i + 0x100).toString(16).substr(1));
+}
+
+function stringify(arr, offset = 0) {
+  // Note: Be careful editing this code!  It's been tuned for performance
+  // and works in ways you may not expect. See https://github.com/uuidjs/uuid/pull/434
+  const uuid = (byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + '-' + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + '-' + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + '-' + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + '-' + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]]).toLowerCase(); // Consistency check for valid UUID.  If this throws, it's likely due to one
+  // of the following:
+  // - One or more input array values don't map to a hex octet (leading to
+  // "undefined" in the uuid)
+  // - Invalid input values for the RFC `version` or `variant` fields
+
+  if (!(0, _validate.default)(uuid)) {
+    throw TypeError('Stringified UUID is invalid');
+  }
+
+  return uuid;
+}
+
+var _default = stringify;
+exports.default = _default;
+
 /***/ }),
 
 /***/ 962:
@@ -8593,6 +9143,91 @@ function isUnixExecutable(stats) {
 }
 //# sourceMappingURL=io-util.js.map
 
+/***/ }),
+
+/***/ 998:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = _default;
+exports.URL = exports.DNS = void 0;
+
+var _stringify = _interopRequireDefault(__webpack_require__(950));
+
+var _parse = _interopRequireDefault(__webpack_require__(746));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function stringToBytes(str) {
+  str = unescape(encodeURIComponent(str)); // UTF8 escape
+
+  const bytes = [];
+
+  for (let i = 0; i < str.length; ++i) {
+    bytes.push(str.charCodeAt(i));
+  }
+
+  return bytes;
+}
+
+const DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';
+exports.DNS = DNS;
+const URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';
+exports.URL = URL;
+
+function _default(name, version, hashfunc) {
+  function generateUUID(value, namespace, buf, offset) {
+    if (typeof value === 'string') {
+      value = stringToBytes(value);
+    }
+
+    if (typeof namespace === 'string') {
+      namespace = (0, _parse.default)(namespace);
+    }
+
+    if (namespace.length !== 16) {
+      throw TypeError('Namespace must be array-like (16 iterable integer values, 0-255)');
+    } // Compute hash of namespace and value, Per 4.3
+    // Future: Use spread syntax when supported on all platforms, e.g. `bytes =
+    // hashfunc([...namespace, ... value])`
+
+
+    let bytes = new Uint8Array(16 + value.length);
+    bytes.set(namespace);
+    bytes.set(value, namespace.length);
+    bytes = hashfunc(bytes);
+    bytes[6] = bytes[6] & 0x0f | version;
+    bytes[8] = bytes[8] & 0x3f | 0x80;
+
+    if (buf) {
+      offset = offset || 0;
+
+      for (let i = 0; i < 16; ++i) {
+        buf[offset + i] = bytes[i];
+      }
+
+      return buf;
+    }
+
+    return (0, _stringify.default)(bytes);
+  } // Function#name is not settable on some platforms (#270)
+
+
+  try {
+    generateUUID.name = name; // eslint-disable-next-line no-empty
+  } catch (err) {} // For CommonJS default export support
+
+
+  generateUUID.DNS = DNS;
+  generateUUID.URL = URL;
+  return generateUUID;
+}
+
 /***/ })
 
 /******/ });

package.json

@@ -31,7 +31,8 @@
     "@actions/exec": "^1.0.4",
     "@actions/http-client": "^1.0.9",
     "@actions/tool-cache": "^1.6.1",
-    "semver": "^7.3.4"
+    "semver": "^7.3.4",
+    "uuid": "^8.3.2"
   },
   "devDependencies": {
     "@types/jest": "^26.0.3",

src/buildx.ts

@@ -34,15 +34,6 @@ export async function isAvailable(): Promise<Boolean> {
   });
 }
 
-export async function countBuilders(): Promise<number> {
-  return await exec.exec(`docker`, ['buildx', 'ls'], true).then(res => {
-    if (res.stderr != '' && !res.success) {
-      throw new Error(`Cannot list builders: ${res.stderr}`);
-    }
-    return (res.stdout.trim().split(`\n`).length - 1) / 2;
-  });
-}
-
 export async function platforms(): Promise<String | undefined> {
   return await exec.exec(`docker`, ['buildx', 'inspect'], true).then(res => {
     if (res.stderr != '' && !res.success) {

src/main.ts

@@ -27,8 +27,7 @@ async function run(): Promise<void> {
     const buildxVersion = await buildx.getVersion();
     core.info(`📣 Buildx version: ${buildxVersion}`);
 
-    const builderName: string =
+    const builderName: string = inputs.driver == 'docker' ? 'default' : `builder-${require('uuid').v4()}`;
-      inputs.driver == 'docker' ? 'default' : `builder-${process.env.GITHUB_JOB}-${(await buildx.countBuilders()) + 1}`;
     core.setOutput('name', builderName);
     stateHelper.setBuilderName(builderName);
 

yarn.lock

@@ -3611,6 +3611,11 @@ uuid@^8.2.0:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.0.tgz#ab738085ca22dc9a8c92725e459b1d507df5d6ea"
   integrity sha512-fX6Z5o4m6XsXBdli9g7DtWgAx+osMsRRZFKma1mIUsLCz6vRvv+pz5VNbyu9UEDzpMWulZfvpgb/cmDXVulYFQ==
 
+uuid@^8.3.2:
+  version "8.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
+  integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
+
 v8-to-istanbul@^4.1.3:
   version "4.1.4"
   resolved "https://registry.yarnpkg.com/v8-to-istanbul/-/v8-to-istanbul-4.1.4.tgz#b97936f21c0e2d9996d4985e5c5156e9d4e49cd6"