version: "3" services: ulimit1: image: ulimit_test command: ["ulimit.sh" ] ulimit: nofile=1001 build: context: ./ dockerfile: Dockerfile ulimit2: image: ulimit_test command: ["ulimit.sh" ] ulimit: - nproc=1002:2002 - nofile=1002 build: context: ./ dockerfile: Dockerfile ulimit3: image: ulimit_test command: [ "ulimit.sh" ] ulimit: nofile: 1003 nproc: soft: 1003 hard: 2003 build: context: ./ dockerfile: Dockerfile