ENTRYPOINT and CMD are too complex
Table of contents
- What are the challenges that we are trying to solve?
- What ideas do we have for how to address these challenges?
- How do these ideas break down into…
- Questions?
- What pre-existing work or software can support these ideas?
- Relevant OCI Issues
What are the challenges that we are trying to solve?
ENTRYPOINT and CMD interactions are too complex. See the 16-cell
matrix in the Dockerfile reference and note its (a) large size and (b)
inconsistencies. For example, behavior differs between ENTRYPOINT specified
as a command line (ENTRYPOINT foo bar) or list (ENTRYPOINT ["foo",
"bar"]), and the difference between the 2nd and 3rd lines is unclear.
What ideas do we have for how to address these challenges?
New instruction (EXEC?) that specifies both the command and default
arguments.
How do these ideas break down into…
Already existing OCI specs?
A new project (CNCF or OCI)
If a Dockerfile spec could be created, this idea would supplement it.