feat(.env): allow environment variables to be passed dynamically to a container

[omarsoufiane]

In a production environment, keeping the environment variables inside the docker image is not recommended.
In production, we will most likely use Kubernetes or a container service like ECS where environment variables are passed dynamically to the container from a configmap or a secrets store. with the current configuration the dynamically passed environment variables are overridden by the local .env file that was present during the build of the container.
when I removed the .env file from the docker file I noticed that TypeORM Cli wasn't working correctly because it uses "env-cmd" which requires a .env but isn't necessary in an environment where the variables are dynamic.
so I created a little script "typeorm-cli.js" that would run typeorm CLI with "env-cmd" when needed and without it in a production environment such as kubernetes or ECS