Homebrew

• Installs bash version 3.2.57 to match MacOS version
• Creates linuxbrew user and gives sudo permissions to it
• Installs homebrew

Related docs

• https://hub.docker.com/r/linuxbrew/alpine/dockerfile
• https://stackoverflow.com/questions/34805372/how-can-i-test-my-bash-script-on-older-versions-of-bash
• https://docs.brew.sh/Homebrew-on-Linux