步骤1:编写Dockerfile 首先,我们需要编写一个Dockerfile,该文件描述了如何构建Docker镜像。Dockerfile是一个文本文件,其中包含一系列的指令,用于配置和构建Docker镜像。 以下是一个示例Dockerfile: FROMubuntu:latestMAINTAINERYour Name <your-email@example.com># 设置工作目录WORKDIR/app# 复制应用程序到工作目录COPY. ...
[root@docker ~]# docker run -it centos:7 bash [root@docker ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES eca17c89df56 centos:7 "/bin/bash" 27 seconds ago Up 27 seconds great_galileo #-v : 挂载目录到容器中 [root@docker ~]# docker run -it -v /tmp:/tmp c...
The variable expansion technique in this example allows you to pass arguments from the command line and persist them in the final image by leveraging theENVinstruction. Variable expansion is only supported fora limited set of Dockerfile instructions. 在此示例中,变量扩展技术使您可以从命令行传递参数,...
使用带用户密码clone的方式： git clone https://username:password@remote 当username和password中含有特殊...
On the compose command line: $ THEENV=bar docker compose up [+] Running 2/0 ✔ Synchronized File Shares 0.0s ✔ Container dd-envtest-1 Recreated 0.1s Attaching to envtest-1 envtest-1 | PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin ...
ARG 设置 ENV 无效的原因：ARG 的作用范围 Dockerfile 如下： ARG BASE_IMAGE ARG VARIABLE=test FROM...
先在文件最前面使用ARG命令定义 然后在每个阶段分别引用ARG命令使用 一个示范的 Dockerfile 文件如下: # global argument, can cross multiple stages ARGAPP_HOME=/home/web/app # build stage FROMnode:16-alpine as builder ARGAPP_HOME # maintainer info ...
Then, assume this image is built with this command:然后，假定此镜像是使⽤以下命令构建的：$ docker build --build-arg CONT_IMG_VER=v2.0.1 .In this case, the RUN instruction uses v1.0.0 instead of the ARG setting passed by the user:v2.0.1 This behavior is similar to a shell ...
An ARG variable definition comes into effect from the line on which it is defined in the Dockerfile not from the argument’s use on the command-line or elsewhere. For example, consider this Dockerfile:ARG变量从 Dockerfile 中定义的⾏开始⽣效，⽽不是从命令⾏或其他地⽅的⾃变量使⽤...
image 参数指定了要从中启动容器的Docker镜像名称。如果镜像不在本地,Docker将尝试从配置的镜像仓库中拉取该镜像。 4. [command] [arg...] 部分的用途 [command] 部分允许你在容器启动时执行一个特定的命令,而不是使用镜像中默认的命令。[arg...] 是传递给该命令的参数列表。 使用示例: bash docker run ubu...