services: app: image: "quay.io/epicmorg/crowd:3.1.2" build: context: . app-jdk6: image: "quay.io/epicmorg/crowd:3.1.2-jdk6" build: context: . app-jdk7: image: "quay.io/epicmorg/crowd:3.1.2-jdk7" build: context: . dockerfile: Dockerfile.jdk7