alpine

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

Versions	Size	Layer
`3.13` (3.13/Dockerfile)
`3.13-openrc` (3.13/Dockerfile)
`3.14` (3.14/Dockerfile)
`3.14-openrc` (3.14/Dockerfile)

Dockerfile to build an alpine base image 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.