Create customized hello world test for each boilerplate

• refactor: customize hello world test for each boilerplate fa72a7a
• feat: use random port for testing c3b6b17
• refactor: set NODE_ENV=test inside the test entrypoint file ab68e65
• refactor: load "test.ts" file to run tests bf5316c

v5.5.3-0...v5.5.4-0