A Docker image is a file used to execute code in a Docker container. Docker images act as a set of instructions to build a Docker cotainer, such as a template. Docker images also act as the starting point when using Docker. An image is comparable to a snapshot in virtual machine (VM...
FROM ImageName # directive=value Treated as a comment because it appears after a comment that isn't a parser directive: # About my dockerfile # directive=value FROM ImageName The following unknowndirective is treated as a comment because it isn't recognized. The known syntax directive is trea...
This command downloads a test image and runs it in a container. When the container runs, it prints a confirmation message and exits. You have now successfully installed and started Docker Engine. Tip Receiving errors when trying to run without root?
Run 'docker image COMMAND --help' for more information on a command. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 通过docker image COMMAND --help来知道每一个Image命令的详细信息。 Run 'docker image COMMAND --help' for ...
dockerfile是为快速构建docker image而设计的,当你使用docker build 命令的时候,docker 会读取当前目录下的命名为Dockerfile(首字母大写)的纯文本文件并执行里面的指令构建出一个docker image。 而另一种构建docker iamge 的方法是pull一些基础镜像下来启动成容器,然后进入容器内安装各种需要的程序以及配置好需要的环境,...
[root@yangzi~]# docker imagesREPOSITORYTAGIMAGEIDCREATEDSIZEtomcat latest fb5657adc8927months ago 680MB 创建容器,使用docker run命令启动tomcat,并将本机的8080端口映射到容器里面的8080端口 代码语言:javascript 复制 #从Docker Hub 下载tomcat镜像到本地并运行-it 交互终端-p 端口映射 ...
来自AS的Dockerfile引发无效的引用格式 Dockerfile是用于构建Docker镜像的文本文件,它包含了一系列的指令和参数,用于定义镜像的构建过程。在Dockerfile中,可以使用FROM指令来指定基础镜像,即构建新镜像所依赖的基础环境。 "来自AS的Dockerfile引发无效的引用格式"这个问题可能是指在Dockerfile中使用了无效的引用格式,导致构...
Publish your image on Docker Hub Share your application with the world (or other developers on your team). Sign up for free Choose a subscription that’s right for you Find your perfect balance of collaboration, security, and support with a Docker subscription. ...
FROM<image>[:<tag>] [AS <name>] FROM<image>[@<digest>] [AS <name>] 任何Dockerfile 中的第一条指令必须为 FROM 指令。并且,如果在同一个 Dockerfile 中创建多个镜像,可以使用多个 FROM 指令(每个镜像一次)。 在Dockerfile 中可以多次出现 FROM 指令,当 FROM 第二次或者之后出现时,表示在此刻构建时...
FROM [--platform=<platform>] <image>[:<tag>] [AS <name>] 1. 要么 FROM [--platform=<platform>] <image>[@<digest>] [AS <name>] 1. 该FROM指令初始化一个新的构建阶段,并为后续指令设置基本映像。因此,有效的Dockerfile必须从FROM指令开始。该图像可以是任何有效的图像- 从公共存储库中拉出图像...