Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly. With Docker, you can manage your infrastructure in the same ways you manage your applications.
Run the following command to download and install the package.
curl -fsSL https://get.docker.com | sh
Next, start the docker service and check its status, by running the following command.
systemctl start docker systemctl status docker
Run the below commands to view the list of available commands and to get help.
Also, will print all available options
docker COMMAND --help docker ps --help docker run --help
We will create an instance of Apache 2.4 container and name it as may-apache-app.
In this example, our website files and contents are stored in
/home/user/website/. We will map the website directory to /usr/local/apache2/htdocs/ on the container.
docker run -dit --name my-apache-app -p 8080:80 -v /home/user/website/:/usr/local/apache2/htdocs/ httpd:2.4
Note that the requests are made to port 8080 will be redirected to port 80 from the above command.
Run the command to view if the container is running or not
[root@vps ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES b1f57b026341 httpd:2.4 "httpd-foreground" 13 seconds ago Up 12 seconds 0.0.0.0:8080->80/tcp, :::8080->80/tcp my-apache-app [root@vps ~]#
Now let’s create a web page named docker.html inside /home/user/website directory.
Add the following content to the file.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Learn Docker at crowncloud.com</title> </head> <body> <h1>This is testing docker with crowncloud</h1> </body> </html>
Enter it into your browser's address bar and it should be presented with the page we created previously.
You can stop the container by running the following command.
docker stop my-apache-app
Run the following command to remove the container
docker rm my-apache-app
To finish cleaning up, you may want to delete the image that was used in the container.
docker image remove httpd:2.4