Get dotnet ef migration commands working inside container

[mrodrigues95]

Commands like dotnet ef database update may need to be run from within the container so that the database can be accessed.

The problem is we need to install the EF cli tools (dotnet tool install --global dotnet-ef) inside the correct path or else we cannot reference the commands. We'll probably need to clean up the installation paths a bit for the dev container.

References:

• https://stackoverflow.com/questions/57066856/command-dotnet-ef-not-found-in-net-core-3
• https://stackoverflow.com/questions/62122253/best-way-to-use-docker-for-entity-framework-core-update-with-postgres/62127064