fix/dockerfiles: Update CMD instruction in 'Dockerfile.dev' to use exec form

[mertssmnoglu]

- What I did

I updated the CMD instruction in the dockerfiles/Dockerfile.dev to prevent the JSONArgsRecommended build check warning.

- How I did it

I followed the dockerdocs instructions

- How to verify it

You can run make dev command on the master branch, when the build finished successfully it shows a yellowish "JSONArgsRecommended" warning.

JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 50)

Once you switch to the fix-dockerfile-exec-form branch, and re-run make dev you will not see any JSONArgsRecommended warning.

The expected output:

• My Docker CLI Version: 27.2.1
• Docker Engine Git Commit: 8b539b8df2

- Description for the changelog

Fix "`JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals`"

- A picture of a cute animal (not mandatory but encouraged)

[thaJeztah]

This should probably be /bin/bash;

docker run -it --rm alpine
ask add --no-cache bash

command -v bash
/bin/bash

[mertssmnoglu]

Oops, I missed it. Thank you.
40ce68a

[thaJeztah]

Thanks! Looks like the second commit is missing a DCO sign-off, which makes CI fail

could you squash both commits (we prefer not to keep history for fix-ups like this), and amend the commit message so that it has a DCO sign-off?

Let me know if you need help doing so!

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.48%. Comparing base (b462778) to head (48dbdc6).
Report is 21 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5742      +/-   ##
==========================================
- Coverage   59.51%   59.48%   -0.04%     
==========================================
  Files         346      346              
  Lines       29376    29367       -9     
==========================================
- Hits        17483    17468      -15     
- Misses      10923    10926       +3     
- Partials      970      973       +3