- Add `.dockerignore` file
- Add `Dockerfile.dev`
- Modify `docker-compose.yml`:
- Add `restart: on-failure` to `app` service
- Modify `build` section of `app` service
- Remove `links` section from `app` service
- Add `networks` section to `app` and `db` services
- Add `networks` section to the end of the file
Signed-off-by: wancat <wancat@wancat.cc>