docker image to demonstrate creating a user and group at runtime; based off of alpine:latest

Build image:

docker build -t mbentley/runtime-user .

Example usage:

docker run -it --rm \
  -e MY_USERNAME=default \
  -e MY_GROUP=default \
  -e MY_UID=1000 \
  -e MY_GID=1000 \
  mbentley/runtime-user

Startup environment variables:

• MY_USERNAME - (default: default) username to use inside the container
• MY_GROUP - (default: default) group name to use inside the container
• MY_UID - (default: 1000) UID of the new user inside the container; this is important if you want to have the UID outside the container match inside
• MY_GID - (default: 1000) GID of the new user's group inside the container; this is important if you want to have the GID outside the container match inside