DL3048 style: Invalid label key.

DL3018 warning: Pin versions in apk add. Instead of `apk add <package>` use `apk add <package>=<version>`

DL4006 warning: Set the SHELL option -o pipefail before RUN with a pipe in it. If you are using /bin/sh in an alpine image or if your shell is symlinked to busybox then consider explicitly setting your SHELL to /bin/ash, or disable this check