services: busy: image: busybox ports: - "8081:8080" - "8026:8025" volumes: - ./certs:/certs - ./certs-level1/certs-level2/certs-level3/cert2.pem:/certs/cert2.pem - ./auth.txt:/auth.txt - ./users.php:/users.php:ro command: [ "/bin/sh", "-c", "cat /auth.txt /users.php /certs/cert1.pem /certs/cert2.pem" ]