Unlike theshellform, theexecform does not invoke a command shell. This means that normal shell processing does not happen. For example,CMD [ "echo", "$HOME" ]will not do variable substitution on$HOME.If you want shell processing then either use theshellform or execute a shell directly, f...
#Commands to update the image RUN echo "deb http://archive.ubuntu.com/ubuntu/ raring main universe" >> /etc/apt/ sources.list RUN apt-get update && apt-get install -y nginx RUN echo "\ndaemon off;" >> /etc/nginx/nginx.conf #Commands when creating a new container CMD /usr/sbin/n...
If you listmore than oneCMD, only the last one takes effect. So if you have multiple commands to run, you better write them in a script file. Docker is not the VMware, there is nosystemdin the container. Its startup program is the container application process. The container exists for...
The RUN, CMD, and ENTRYPOINT instructions all have two possible forms: INSTRUCTION ["executable","param1","param2"] (exec form) INSTRUCTION command param1 param2 (shell form) The exec form makes it possible to avoid shell string munging, and to invoke commands using a specific command shell...
CMD ["x11vnc", "-forever", "-usepw", "-create"] # Multiple images example # # VERSION 0.1 FROM ubuntu RUN echo foo > bar # Will output something like ===> 907ad6c2736f FROM ubuntu RUN echo moo > oink # Will output something like ===> 695d7793cbe4 ...
CMD是容器启动时执行的命令,在构件时并不运行,构件时紧紧指定了这个命令到底是个什么样子 LABEL 功能是为镜像指定标签 语法: LABEL <key>=<value> <key>=<value> <key>=<value> ... 一个Dockerfile种可以有多个LABEL,如下: LABEL "com.example.vendor"="ACME Incorporated"LABEL com.example.label-with-valu...
RUN Executes any commands in a new layer on top of the current image and commits the result.RUNalso has a shell form for running commands. WORKDIR <directory>Sets the working directory for anyRUN,CMD,ENTRYPOINT,COPY, andADDinstructions that follow it in the Dockerfile. COPY <src...
Dockerfile常用指令一、DockerfileDocker可以通过 Dockerfile自动构建镜像,Dockerfile是一个包含多个指令的文档。如下 # syntax=docker/dockerfile:1 FROM ubuntu:18.04 COPY . /app RUN make /app CMD python /a…
If you listmore than oneCMD, only the last one takes effect. So if you have multiple commands to run, you better write them in a script file. Dockeris not the VMware, there is nosystemdin the container. Its startup program is the container application process. The container exists for ...
$ docker build -t test/myapp .Sending build context to Docker daemon 2.048 kBError response from daemon: Unknown instruction: RUNCMDDocker守护程序以Dockerfile一对一的方式运行指令,如有必要,将每个指令的结果提交到新映像,然后最终输出新映像的ID。Docker守护程序将自动清理您发送的上下文。