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How to deploy Docker in Debian
Introduction
This article introduces how to deploy Docker in Debian. For basic knowledge about Docker, go to the Related Documents. Install Docker 1. Add APT sources as the root user, and add public keys to authorize Docker installation sources $ curl -s 'https://sks-keyservers.net/pks/lookup?op=get&search=0xee6d536cf7dc86e2d7d56f59a178ac6c6238f52e' | sudo apt-key add --import Install APT HTTPS support sudo apt-get update && sudo apt-get install apt-transport-https Install Image virtulization support sudo apt-get install -y linux-image-extra-virtual Add APT sources echo "deb https://packages.docker.com/1.11/apt/repo ubuntu-trusty main" | sudo tee /etc/apt/sources.list.d/docker.list Install Docker apt-get update && apt-get install docker-engine Check whether the installation succeeds docker info The following information indicates a successful installation Containers: 1 Running: 1 Paused: 0 Stopped: 0 Images: 15 Server Version: 1.11.2-cs3 Storage Driver: aufs Root Dir: /var/lib/docker/aufs Backing Filesystem: extfs Dirs: 17 Dirperm1 Supported: true Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge null host Kernel Version: 3.16.0-4-amd64 Operating System: Debian GNU/Linux 8 (jessie) OSType: linux Architecture: x86_64 CPUs: 1 Total Memory: 3.871 GiB Name: debian ID: IWCZ:QXXZ:VBUN:UMF7:XRG3:CMXB:6LUO:F65C:OA6B:75QQ:7SEW:3OKT Docker Root Dir: /var/lib/docker Debug mode (client): false Debug mode (server): false Registry: https://index.docker.io/v1/ Make basic software images JDK 8 The JDK should be installed first. Here we use JDK 8. Download JDK Write the Dockerfile in the same directory FROM registry.cn-hangzhou.aliyuncs.com/yuuji/debian:latest ADD jdk-8u101-linux-x64.tar.gz /opt ENV JAVA_HOME /opt/jdk1.8.0_101 WORKDIR /usr/bin RUN ln -s /opt/jdk1.8.0_101/bin/java java The directory is structured as follows: 
Compile and publish it docker build -t jdk8 . You can also create a repository on Docker Hub servers and publish it to remote servers docker build -t registry.cn-hangzhou.aliyuncs.com/xxx/jdk8 . docker push registry.cn-hangzhou.aliyuncs.com/xxx/jdk8 You can view the published repository on the remote server, or through a command docker images mave3 Based on JDK 8, we can make an image of Maven 3 following the same steps above. I will not go into the command details here. Dockerfile FROM registry.cn-hangzhou.aliyuncs.com/yuuji/jdk8:latest ADD settings.xml /root/.m2/settings.xml ADD apache-maven-3.3.9-bin.tar.gz /opt WORKDIR /usr/bin RUN ln -s /opt/apache-maven-3.3.9/bin/mvn mvn Publish and see whether it succeeds. Software errors What can we do if errors occur during the process? Run command docker images. If none is displayed, run command docker rmi IMAGE ID to clear the image. If the clear operation failed, it may be because the image is being used. Run command docker ps -a to locate the container using the image, and run command docker rm CONTAINER ID. Compile project for deployment Run command spring-boot to start the project, and then create the Dockerfile under the project and directory. FROM registry.cn-hangzhou.aliyuncs.com/yuuji/maven3:latest EXPOSE 7001 RUN mkdir -p /opt/leona WORKDIR /opt/leona ADD . /opt/leona RUN mvn clean install -Dmaven.test.skip CMD ["java","-jar","target/leona.jar"] Port 7001, which is configured by your spring-boot web. The structure is as follows: 
The way to compile the image is the same as that for software. Here I will not publish it to the remote server. docker build -t xxx . The final docker image in the local repository: 
Deploy Docker After the software and application image is compiled, it’s time for deployment. docker run -d -p 7001:7001 xxx Run a check using curl localhost:7001 <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Leona</title> </head> <body> hello word! </body> </html> It is easy, isn’t it? |
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