Exposing a Container Port on the Host

Tested Infrastructure

<table class="tg"> <tr> <th class="tg-yw4l">Platform</th> <th class="tg-yw4l">Number of Instance</th> <th class="tg-yw4l">Reading Time</th> </tr> <tr> <td class="tg-yw4l"> Mac OS</td> <td class="tg-yw4l">1</td> <td class="tg-yw4l">5 min</td> </tr> </table>

Pre-requisite

A linux system (here we have used macbook)
Docker installed

To expose the container port on the host we use -p or --publish option. [-p host_port:container_port ]

docker

$ docker run -dit --name my-apache-app -p 8080:80 -v "$PWD":/usr/local/apache2/htdocs/ httpd:2.4
7e14fd11385969433f3273c3af0c74f9b0d0afd5f8aa7492b9705712df421f14

Once the port exposed to host , try to reach the port via explorer or with curl commands. You should get proper output from the container

docker

$ curl localhost:8080
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html>
 <head>
  <title>Index of /</title>
 </head>
 <body>
<h1>Index of /</h1>
<ul></ul>
</body></html>