这里假设你已经有一个现有的镜像,称为existing_image。创建一个新的目录,然后在该目录中创建一个名为Dockerfile的文件,内容如下: # 基于已有的镜像 FROM existing_image # 安装 flask_cors RUN pip install flask_cors 构建新的 Docker 镜像:进入包含 Dockerfile 的目录,并使用docker build命令来构建新的镜像。确...
1)Make sure your existing yum packages are up-to-date.CentOS使用yum update更新时不升级内核1 2 3 4 5 6 7 cp /etc/yum.conf /etc/yum.confbak 方法一、修改yum的配置文件 vi /etc/yum.conf 在[main]的最后添加 exclude=kernel* 方法二、直接在yum的命令后面加上如下的参数: yum --exclude=...
In all cases, the file must be within the build context. The default is Dockerfile. --squash true|false Experimental Only Once the image is built, squash the new layers into a new image with a single new layer. Squashing does not destroy any existing image, rather it creates a new ...
The Docker daemon supports a special host-gateway value for the --add-host flag for the docker run and docker build commands. This value resolves to the host's gateway IP and lets containers connect to services running on the host.
A Docker container is a running instance of a Docker image. We create VMs from VM images. Similarly way we create a container from a container image. When you create a container from a Docker image, you are creating a writable layer on top of the existing image layers. ...
通过Dockerfile,完成镜像image的创建 下面通过展示具体操作方法: 第一种:使用hub仓库中已有的环境,安装自己使用的软件环境后完成image创建。 制作自己的Docker镜像环境,里面包括: (1)centos (2)golang 1、docker pull centos(pull最新的centos系统) 2、docker run -it centos /bin/bash(运行进入容器) ...
Docker Image作为Docker生态中的精髓,下载过程中需要Docker架构中多个组件的协作。Docker镜像的下载流程如图3.1: 图3.1 Docker镜像下载流程图 如上图,下载流程,可以归纳为以上3个步骤: (1) 用户通过Docker Client发送pull请求,作用为:让Docker Daemon下载指定名称的镜像; ...
existing container # 在已存在的容器上运行命令 export Stream the contents of a container as a tar archive # 导出容器的内容流作为一个 tar 归档文件[对应 import ] history Show the history of an image # 展示一个镜像形成历史 images List images # 列出系统当前镜像 import Create a new filesystem ...
$sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin Verify that the installation is successful by running thehello-worldimage: $sudo docker run hello-world This command downloads a test image and runs it in a container. When the container runs...
docker tag <existing-image> <hub-user>/<repo-name>[:<tag>]其中existing-image代表本地待上传的镜像名加tag,后面<hub-user>/<repo-name>[:<tag>]则是为上传更改的标签名,tag不指定则为latest。 接下来,我们利用push命令直接上传镜像。 docker push <hub-user>/<repo-name>:<tag> ...