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Usage: run [options] [-v VOLUME...] [-p PORT...] [-e KEY=VAL...] SERVICE [COMMAND] [ARGS...]
Options:    
        -d                    Detached mode: Run container in the background, print                          
                              new container name.    
        --name NAME           Assign a name to the container    
        --entrypoint CMD      Override the entrypoint of the image.    
        -e KEY=VAL            Set an environment variable (can be used multiple times)    
        -u, --user=""         Run as specified username or uid    
        --no-deps             Don't start linked services.    
        --rm                  Remove container after run. Ignored in detached mode.    
        -p, --publish=[]      Publish a container's port(s) to the host    
        --service-ports       Run command with the service's ports enabled and mapped
                              to the host.    
        -v, --volume=[]       Bind mount a volume (default [])    
        -T                    Disable pseudo-tty allocation. By default `docker-compose run`
                              allocates a TTY.    
        -w, --workdir=""      Working directory inside the container

针对服务运行一次性命令。例如,以下命令启动该web服务并bash作为其命令运行。

docker-compose run web bash

您使用的命令run从具有由服务定义的配置的新容器中启动,包括卷,链接和其他详细信息。但是,有两个重要的区别。

首先,通过的命令将run覆盖服务配置中定义的命令。例如,如果web服务配置以bash开头,则将其docker-compose run web python app.py覆盖python app.py

第二个区别是该docker-compose run命令不会创建服务配置中指定的任何端口。这可以防止端口与已打开的端口发生冲突。如果您确实想要创建服务的端口并将其映射到主机,请指定--service-ports标志:

docker-compose run --service-ports web python manage.py shell

或者,可以使用--publish-p选项,就像使用docker run

docker-compose run --publish 8080:80 -p 2022:22 -p 127.0.0.1:2021:21 web python manage.py shell

如果启动使用链接配置的服务,则该run命令首先检查链接服务是否正在运行,并在服务停止时启动该服务。一旦所有链接的服务正在运行,run执行您通过它的命令。例如,您可以运行:

docker-compose run db psql -h db -U docker

这将为链接db容器打开一个交互式 PostgreSQL shell 。

如果您不希望run命令启动链接容器,请使用--no-deps国旗:

docker-compose run --no-deps web python manage.py shell
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