Given a Git repository as Docker context:

my_project_dir
├── Dockerfile 
├── run_myapp.py
├── requirements.txt 
├── dir1
│   └── ... some files
└── dir2
    └── ... some files

I want to use COPY to move the run_myapp.py and requirements.txt but not the two directories. I want to keep my Docker image light so I don't want to include the directories; those are used for other services.

Currently I have COPY used as follows:

...

COPY run_myapp.py run_myapp.py
COPY requirements.txt requirements.txt 
...

I don't want to use COPY . . since this will copy everything.

I there a way to specify all docs but not directories?

What I've tried

I read Copy current directory in to docker image and some similar questions outside of StackOverflow like https://www.geeksforgeeks.org/docker-copy-instruction/ but none answer my question.

CodePudding user response：

The Dockerfile COPY syntax supports shell globs but doesn't support any sort of matching on file type. You can copy all things with a given name *.py but not "only files". For the actual glob syntax it delegates to the Go path/filepath module which supports only the basic *, ?, and [a-z] characters as "special".

You aren't limited to a single file in a COPY command, though, as @JoachimSauer notes in a comment, and you don't have to spell out the destination directory or filename on the right-hand side. A relative path like . is relative to the current WORKDIR. So here I might write

WORKDIR /app
COPY run_myapp.py requirements.txt .

CodePudding user response：

Using .dockerignore file with the following content should do the trick:

*/*