This is a simple Docker image to provide reproducible eBPF ELF builds across contributors' workstations. This standardizes on a single environment used to regenerate e.g. testdata ELFs and does not depend on the toolchain installed on the host machine.
Additionally, it reduces drift in the bytecode committed to the repository over time as the same exact clang + llc version is used throughout the development lifecycle. Only when upgrading or rebuilding the Docker image would changes in .elf files be expected (assuming the .c files are untouched).
Building the image requires Docker. Run the build with:
make build
This updates the VERSION file. Commit it and submit a PR upstream.
Before running make, ensure Docker buildx
is enabled. Additionally QEMU user and binfmt should be installed. On a Debian based distribution
the command to add them is apt install qemu-user-static binfmt-support.
After building, push the image to the Docker registry specified in IMAGE with:
make push