Configure Web-Server on Docker Container

What is Docker ?

Docker is an open source containerization platform used to configure the environments on the top of base OS. It is an application build & deployment tool.

Configuring Docker :

I am configuring docker on top of RHEL 8:

To install docker Firstly, we need to Configure yum repository:

Step 1. Configure Docker repository :

STEP 1.

Go to “/etc/yum.repos.d/” by sing cd command :

$ cd /etc/yum.repos.d/

STEP 2.

Create a a repo file e.g. docker.repo by using any editor , Here I am using vi editor.

$ vi docker.repo

STEP 3.

Write

[docker]

baseurl= https://download.docker.com/linux/centos/7/x86_64/stable/

gpgcheck=0

• This is the URL you need to use at the place of BaseURL https://download.docker.com/linux/centos/7/x86_64/stable/
• setgpgcheck to 0 so no GPG authentication issue

To check Yum repository is configured by using command

$ yum repolist

See in above Image Docker repo is configured .

Step 2. Install Docker

Install Docker by using command

$ yum install docker-ce — nobest

Step3.

To start Docker by using command:

$ systemctl start docker

To check Docker started or not by command:

$ systemctl status docker

➠ To check docker is installed or not in the system, use command

rpm -q docker-ce

➠ To start docker services, use command

systemctl start docker

➠ To check docker services started or not, use command

systemctl status docker

❖ Install HTTPD Software

➠ To launch OS on the top of docker, use command

docker run -i -t --name <container_name> <image_name>

➠ To install httpd software, use command

yum install httpd

➠ These errors are due to firewall security, so stop this security first & restart docker services then install the httpd software.

systemctl stop firewalld               # to stop firewall securitysystemctl restart docker               # to restart docker servicesdocker start <container_name>          # to start previous containerdocker attach <container_name>         # to get console of container yum install httpd

➠ To check httpd software is installed or not, use command

yum list httpd

❖ Create a Web Page

➠ Create a web page inside the document root (/var/www/html), use command

cd /var/www/html          # to go inside the document root/directoryvi <webpage_name>         # to create a web pagecat <webpage_name>        # to read the web page on cli

❖ Start Web Services

➠ To start the web services we normally use command

systemctl start httpd

But this command will not work here so to start web services you have to use command

/usr/sbin/httpd         # to start web services

Now the web services are started.

➠ To open the webpage we created paste the IP address & web page on the browser.

Thus, we configured web server successfully on the top of docker.