Alpine Linux is a Linux distribution built around musl libc and BusyBox.

Versions	Size	Layer
3.5 (3.5/Dockerfile)
3.5-openrc (3.5/openrc/Dockerfile)
3.6 (3.6/Dockerfile)
3.6-openrc (3.6/openrc/Dockerfile)
3.7 (3.7/Dockerfile)
3.7-openrc (3.7/openrc/Dockerfile)
3.8 (3.8/Dockerfile)
3.8-openrc (3.8/openrc/Dockerfile)
3.9, latest (3.9/Dockerfile)
3.9-openrc (3.9/openrc/Dockerfile)

Dockerfile to build a alpine baseimage with a couple of extra packages and enable some repositories.

The image enable the following repositories:

• @edge (dl-cdn.alpinelinux.org/alpine/edge/main)
• @edgecommunity (dl-cdn.alpinelinux.org/alpine/edge/community)
• @testing (dl-cdn.alpinelinux.org/alpine/edge/testing)

The image installs the following extra packages:

• ca-certificates Common CA certificates PEM files.
• su-exec Switch user and group id, setgroups and exec.
• wait4ports A small utility to wait for network peer availability.