this is the main backend service of Eco3s project.
$ git clone https://github.com/eco3s/backend
$ cd backend
$ pnpm install --frozen-lockfile# development
$ pnpm start
# watch mode
$ pnpm start:dev
# production mode
$ pnpm start:prod# unit tests
$ pnpm test
# e2e tests
$ pnpm test:e2e
# test coverage
$ pnpm test:cov