Implementation of Docker deployment of web projects

The previous article has installed the docker service. Now let’s continue to introduce how to deploy a web project.

1: Create a directory dock at random and prepare the following files:

2. Write Dockerfile, which can quickly build docker images

vi Dockerfile

Add the following configuration

FROM centos
MAINTAINER this is dock image <jsh>
ADD jdk1.8.0_191 /usr/local/java
ENV JAVA_HOME /usr/local/java
ENV JAVA_BIN /usr/local/java/bin
ENV JRE_HOME /usr/local/java/jre
ENV PATH $PATH:/usr/local/java/bin:/usr/local/java/jre/bin
ENV CLASSPATH /usr/local/java/jre/bin:/usr/local/java/lib:/usr/local/java/jre/lib/charsets.jar
ADD apache-tomcat-8.5.40 /usr/local/tomcat8
ENTRYPOINT ["/usr/local/tomcat8/bin/catalina.sh","run"]
ADD ./manager.war /usr/local/tomcat8/webapps
EXPOSE 8080

explain:
(1) FROM centos means obtaining the centos base image from the Docker official repository. (2) ADD jdk1.8.0_191 /usr/local/ adds the jdk in the current directory (the same level directory as the Dockerfile) to the /usr/local/ of the image. (3) ENV JAVA_HOME /usr/local/jdk1.8.0_191 sets the Java environment variable. (4) EXPOSE 8080 exposes the port to the outside for external access. (5) CMD /usr/local/tomcat8/bin/catalina.sh run is the command executed after the container is running. If there are multiple CMDs, only the last one is valid.

3. Build an Image

Command: docker build -t dock . (space after dock.) to complete the build automatically. dock identifies the image name

4. Run the container

Command: docker run -d -p 8060:8080 dock
-d means running the container in the background and returning the container ID
-p uses port mapping. 8060:8080 means mapping port 8080 of the container to port 8060 of the host.

View all running container commands: docker ps -all

5. Test deployment results

ip:8060 If the tomcat page appears, it means that the container has been started successfully.

This is the end of this article about the implementation of Docker deployment of web projects. For more relevant content about Docker deployment of web projects, please search for previous articles on 123WORDPRESS.COM or continue to browse the following related articles. I hope everyone will support 123WORDPRESS.COM in the future!