devenv is a tool to quickly build a Docker image based on Ubuntu 22.04 with easily customisable set of packages. The image is built with an entrypoint script which lets you set up an unprivileged user in container OS.
The whole story is intended for developers needing to experiment with different versions of build tools etc.
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Customize packages that you want to install into the container OS. Just edit the packages.list putting one package name per line.
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Add shell scripts or binaries to ./custom directory. These will run at build time as root and the produced result will be baked into the image.
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(optional) edit Makefile, Dockerfile, entrypoint.sh accoriding to your requirements.
This builds Docker image with Ubuntu 22.04 as base installing the tools you chose above. Note that build executes all scripts in ./scripts directory if any are present.
make buildEntrypoint script creates an unprivileged user in container system. Username, gid and uig can be altered when launching the container by passing environment variables to docker run.
If no environment variables were passed to docker run, the unprivileged user will default to developer:developer with uig/gid 1001:1001.
By default the unprivileged user created by entrpoint script has passwordless sudo. If this is not the desired behaviour - consider editing entrypoint.sh before building the image.
This will create a bash script that runs the Docker container from the image built above with your current username, uid and gid. Since username, uid and gid are the same as in your host system you can safely mount anything from your host system into container without creating mess in host OS.
By default the launch script mounts your home directory into the unprivileged user's home in the container. Edit the produced script as approprite if this is not the desired behaviour.
make scriptThis will create the launch script (see above) and place it into you $HOME/.local/bin creating the directory is if does not exist.
make install