Cannot use ENTRYPOINT in Dockerfile/docker-compose.yml

[iamamutt]

Request to be able to use ENTRYPOINT w/ CMD like so:

ENTRYPOINT ["conda", "run", "-n", "my_custom_env", "my_script.py"]
CMD: ["--opt1", "val1", "--opt2", "val2"]

instead of:

CMD: ["conda", "run", "-n", "my_custom_env", "my_script.py", "--opt1", "val1", "--opt2", "val2"]

This would require moving entrypoint.sh functionality elsewhere in the Dockerfile, though.

[guzman-raphael]

This will likely be a bit more involved. Adding some notes below after investigating it a bit further...

Likely need to make a distinction between:

• Boot steps
• Shell (interactive, nologin) steps (runs on normal bash shell)
• Shell (interactive, login) steps (runs bash login like ssh, su)
• Shell (non-interactive) steps (runs on every bash script invocation e.g. BASH_ENV and ENV env vars)

Bash script sourcing order for various shell modes: https://www.gnu.org/software/bash/manual/html_node/Bash-Startup-Files.html
Dash script sourcing order for various shell modes: https://linux.die.net/man/1/dash