docker使用笔记

查看本机上所有镜像

docker images

打包项目（打包完成后自动载入镜像）

The command docker build -t search-server . you provided is a standard way to build a Docker image. The -t flag tags the resulting image, and search-server is the tag (name) you’re assigning to the image. The . at the end of the command tells Docker to use the current directory for the build context, which should contain your Dockerfile.

Here are some points to ensure and improve the build process:

1. Dockerfile Quality: Make sure your Dockerfile is properly written, following best practices such as minimizing the number of layers, ordering multi-line arguments, and removing unnecessary files.

2. Build Context: Only include necessary files in your build context directory to avoid sending a large context to the Docker daemon. You can use a .dockerignore file to exclude files and directories.

3. Build Cache: Docker uses a build cache to speed up image creation. If you need to avoid using the cache, use the --no-cache flag.

4. Multi-Stage Builds: If you have a complex build process, consider using multi-stage builds to keep your final image size small.

5. Security: Remove any sensitive data from the Dockerfile and avoid using plain text credentials. Use secrets or environment variables where necessary.

6. Image Size: Use slim or alpine versions of base images where possible to keep your image size small.

7. Error Handling: Ensure that you have proper error handling and verification steps in your Dockerfile commands.

If the image builds successfully without errors and works as expected, then your build command and Dockerfile are likely fine. However, if you are encountering issues or need specific improvements, you may need to adjust your Dockerfile or build command accordingly.

docker build -t search-server .

导出docker后增加TAG（这一步好像不需要）

docker tag 363fcdaf92c3 search-server:latest

导出镜像
windows环境用这种方法导出很可能会造成linux下无法加载：

docker save image-id > search-server.tar

或

docker save search-server:latest > search-server.tar

采用以下方式更加保险：

docker save <image_name>:<tag> -o <output_file>.tar

或

docker save <image_id> -o <output_file>.tar

载入镜像

docker load < search-server.tar

运行镜像

docker run -p 4100:4100 search-server

让docker能够访问本机目录
windows系统：

docker run -v "E:/:/data" -p 4100:4100 search-server

linux系统：

docker run -v "/:/data" -p 4100:4100 search-server

查看正在运行的docker

docker ps

使用容器id或容器名来停止运行指定的镜像

docker stop <container_id_or_name>

卸载镜像

docker rm c75f653c4b23

删除镜像

docker rmi 363fcdaf92c3

如果删不掉，可以用

docker rmi -f 363fcdaf92c3

在CentOS 8中安装docker镜像：

docker pull docker.elastic.co/elasticsearch/elasticsearch:7.17.18

运行该容器：

docker run -d --name elasticsearch -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:7.17.18