Alpine Linux is actually near and dear to my heart. I’ve actually started experimenting with Alpine Linux awhile back with several of my projects, then drank the Kool-Aid and became a convert shortly after.
For those that don’t know: “Alpine Linux is a security-oriented, lightweight Linux distribution based on musl libc and busy box.” The latest version of Alpine Linux v3.3 weighs in at a whopping 5MB. Not bad for a full blown Linux OS considering 5MB is same size as the Windows Start button.