FROM registry.gitlab.com/fabinfra/fabaccess/bffh:v0.4.2 RUN apt update && apt install -y python3 # this adds python3 to this version of the fabaccess bffh server # https://www.codewithjason.com/docker-hello-world-app/ helped me: # docker build --tag bffh-v0.4.2-with-python3 -f bffh-v0.4.2-with-python3-dockerfile . # https://stackoverflow.com/questions/57528077/docker-compose-with-name-other-than-dockerfile