Pin versions in apt get install. Instead of `apt-get install <package>` use `apt-get install <package>=<version>`

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

Use WORKDIR to switch to a directory

Use WORKDIR to switch to a directory

Avoid additional packages by specifying `--no-install-recommends`