test: move envs to jest config

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

jest.config.ts

@@ -1,5 +1,15 @@
+process.env = Object.assign({}, process.env, {
+  RUNNER_TEMP: '/tmp/github_runner',
+  RUNNER_TOOL_CACHE: '/tmp/github_tool_cache',
+  GITHUB_REPOSITORY: 'docker/build-push-action',
+  GITHUB_RUN_ID: '123456789'
+}) as {
+  [key: string]: string;
+};
+
 module.exports = {
   clearMocks: false,
+  testEnvironment: 'node',
   moduleFileExtensions: ['js', 'ts'],
   setupFiles: ['dotenv/config'],
   testMatch: ['**/*.test.ts'],