Default entrypoint script for dockerfiles to ensure the user/group when running docker containers as binary replacement. An example is to run composer in a docker container.
Assume you have composer installed on you pc. You would type composer install to install dependencies.
In docker you would run this like docker run -it --rm ....
In case of docker, root is running the command. That's not what I want. I want to run the command as the user currently logged in.
Otherwise the vendor directory will be created with root as owner.
So I wrap the docker run command in a shell script named like the binary I want to run.
This is composer in our example.
I places these shell scripts in the home/bin directory and add this to my PATH if it's not already in.
So I can call it from everywhere.
For each "binary" I create this way, I have to create a docker file that inherits from the official image and adds and runs the entrypoint script.
Each wrapper shell script has to
- pass the uid/gid
- pass USER and HOME env's for the current user
- pass the current working dir and
- mount the user's home
This repo only contains the entrypoint script that is used in all my "binaries". So I don't have to copy it over and over.