docker-compose adding to PATH

Question

I need to add some paths to my PATH in docker-compose.yml

in docker-compose.yml I have tried

app:
    ...
    environment:
        - PATH /code/project

however that just overwrites the existing PATH - whereas I want to add to the existing PATH

Answer 1

to add a single location to PATH in your docker-compose.yml file:

app
    environment:
        - PATH=/code/project:$PATH

to add multiple locations to your PATH in your docker-compose.yml file

app
    environment:
        - PATH=/code/project:/code/lib:/foo/bar:$PATH

to add to your PYTHONPATH

app
    environment:
        - PYTHONPATH=/code/project:/code/lib:/foo/bar