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Janak Shrestha
Janak Shrestha

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Write a Docker Compose File

#docker

The Nautilus application development team shared static website content that needs to be hosted on the httpd web server using a containerised platform. The team has shared details with the DevOps team, and we need to set up an environment according to those guidelines. Below are the details:

a. On App Server 3 in Stratos DC create a container named httpd using a docker compose file /opt/docker/docker-compose.yml (please use the exact name for file).

b. Use httpd (preferably latest tag) image for container and make sure container is named as httpd; you can use any name for service.

c. Map 80 number port of container with port 6000 of docker host.

d. Map container's /usr/local/apache2/htdocs volume with /opt/itadmin volume of docker host which is already there. (please do not modify any data within these locations).

Connect to App Server 3 

ssh banner@stapp03
sudo -i
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Password for banner: BigGr33n

Create the Docker Directory 

mkdir -p /opt/docker
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Verify the Host Volume Exists 

ls -la /opt/itadmin
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Output:

total 16
drwxr-xr-x 2 root root 4096 Oct 27 11:34 .
drwxr-xr-x 1 root root 4096 Oct 27 11:34 ..
-rw-r--r-- 1 root root   34 Oct 27 11:34 index1.html
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The host directory /opt/itadmin exists and contains the static website content (index1.html).

Create the Docker Compose File 

vi /opt/docker/docker-compose.yml
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Add the following content:

version: '3.8'

services:
  httpd:
    image: httpd:latest
    container_name: httpd
    ports:
      - "6000:80"
    volumes:
      - /opt/itadmin:/usr/local/apache2/htdocs
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Verify the file:

cat /opt/docker/docker-compose.yml
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Output:

version: '3.8'

services:
  httpd:
    image: httpd:latest
    container_name: httpd
    ports:
      - "6000:80"
    volumes:
      - /opt/itadmin:/usr/local/apache2/htdocs
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Start the Container Using Docker Compose 

cd /opt/docker
docker compose up -d
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Output:

WARN[0000] /opt/docker/docker-compose.yml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion 
[+] up 9/9
 ✔ Image httpd:latest     Pulled                                                                4.9s
 ✔ Network docker_default Created                                                               0.1s
 ✔ Container httpd        Created                                                               0.1s
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The warning about the version attribute is informational only; it does not affect functionality.

Verify the Container is Running 

docker ps | grep httpd
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Output:

c1795d69f717   httpd:latest   "httpd-foreground"   5 seconds ago   Up 4 seconds   0.0.0.0:6000->80/tcp, :::6000->80/tcp   httpd
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The container httpd is running and port 6000 is mapped to container port 80.

Verify the Port Mapping 

docker port httpd
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Output:

80/tcp -> 0.0.0.0:6000
80/tcp -> [::]:6000
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Verify the Volume Mapping 

docker inspect httpd --format='{{range .Mounts}}{{.Source}} -> {{.Destination}}{{end}}'
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Output:

/opt/itadmin -> /usr/local/apache2/htdocs
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The host /opt/itadmin is correctly mapped to the container document root.

Test the Website 

curl -I http://localhost:6000/
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Output:

HTTP/1.1 200 OK
Date: Tue, 27 Oct 2026 11:37:44 GMT
Server: Apache/2.4.69 (Unix)
Content-Type: text/html;charset=ISO-8859-1
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The HTTP 200 OK response confirms the web server is accessible on host port 6000.

Complete Command Sequence 

ssh banner@stapp03
sudo -i

mkdir -p /opt/docker

cat > /opt/docker/docker-compose.yml << 'EOF'
version: '3.8'

services:
  httpd:
    image: httpd:latest
    container_name: httpd
    ports:
      - "6000:80"
    volumes:
      - /opt/itadmin:/usr/local/apache2/htdocs
EOF

cat /opt/docker/docker-compose.yml

cd /opt/docker
docker compose up -d

docker ps | grep httpd
docker port httpd
docker inspect httpd --format='{{range .Mounts}}{{.Source}} -> {{.Destination}}{{end}}'
curl -I http://localhost:6000/
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