version: '3' services: backend3: build: dockerfile: ./task3-backend/Dockerfile context: ../.. volumes: - "/var/run/docker.sock:/var/run/docker.sock" - "./postbox:/app/postbox" - "../../keys/letter:/app/letter" restart: unless-stopped ports: - "31337:31337" networks: net: ipv4_address: 10.103.204.3 networks: net: external: name: tasks-net