Docker Compose inline Dockerfile

Include Dockerfiles inline as attribute in Compose files

The dockerfile_inline attribute got introduced to Docker Compose in version 2.17.0, about a year ago.

I just found out and I really like it!

Example docker-compose.yaml file:

services:
  server:
    container_name: "hi"
    build:
      dockerfile_inline: |
        FROM debian:12-slim as builder
        RUN echo "f0VMRgEBAfCfkYsKAAAAAAIAAwABAAAAgIAECDQAAAAAuAQAAADNgOtYIAACACgABQAEAAEAAAAAAAAAAIAECACABAiiAAAAogAAAAUAAAAAEAAAAQAAAKQAAACkkAQIpJAECAkAAAAJAAAAugkAAAC5B5AECLsBAAAA66QAAADr6rsAAAAAuAEAAADNgA==" \
          | base64 -d > /bin/hi && chmod +x /bin/hi
        FROM scratch
        COPY --from=builder /bin/hi /bin/hi        
    command: [ /bin/hi ]