# Base image to use,thismust be set as the first line FROM ubuntu # Maintainer: docker_user<docker_user at email.com>(@docker_user) MAINTAINER docker_user docker_user@email.com # Commands to update the image RUN echo"deb http://archive.ubuntu.com/ubuntu/ raring main universe" >> /etc...
I understand thatDockerfilesare used inDocker Compose, but I am not sure if it is good practice to put everything in one large Dockerfile with multipleFROMcommands for the different images?我知道Dockerfiles是在Docker Compose中使用的,但是我不确定将所有内容放在一个大型Dockerfile中,并为不同的图像...
MAINTAINER docker_user docker_user@email.com # Commands to update the image RUNecho"deb http://archive.ubuntu.com/ubuntu/ raring main universe">> /etc/apt/sources.list RUN apt-get update && apt-get install -y nginx RUNecho"\ndaemon off;">> /etc/nginx/nginx.conf # Commands when creati...
Let’s look at how we can leverage this in the Dockerfile. The first thing we’ll do is to pin the build platform that we’re using. This is to prevent any emulation from happening because by default when you run with multiple values in your platform flag, it’s going to try to em...
{"com.example.vendor":"ACME Incorporated","com.example.label-with-value":"foo","version":"1.0","description":"This text illustrates that label-values can span multiple lines.","multi.label1":"value1","multi.label2":"value2","other":"value3"} ...
# Commands when creating a newcontainer CMD /usr/sbin/nginx 其中,一开始必须指明所基于的镜像名称,接下来一般是说明维护者信息。后面则是镜像操作指令,例如RUN指令,RUN指令将对镜像执行跟随的命令。每运行一条RUN指令,镜像就添加新的一层,并提交。最后是CMD指令,用来指定运行容器时的操作命令。
$ 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。
Dockeris not the VMware, there is nosystemdin the container. Its startup program is the container application process. The container exists for the main process. Once the main process exits, the container loses its meaning of existence and thus exits. So when you execute multiple commands and...
Dockerfile从上往下顺序执行指令,第一条指令必须是FROM,定义build的parent image(父镜像)。没有parent的镜像叫base image。 参数里面的#就不是注释了,是参数的一部分, 代码语言:javascript 复制 # CommentRUNecho'we are running some # of cool things' ...
FROM <image>Defines a base for your image. 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...