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Introduction to Docker

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EXPOSE Instructions

0:51 with Jay McGavren and Jared Smith

Before you can make a network connection to a service running on a container, you need to expose the port the service is running on. The EXPOSE instruction allows you to do that.

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    before you can make a network connection to a service running on a container, 0:00
    you need to expose the port the service is running on. 0:02
    The EXPOSE instruction allows you to do that. 0:05
    When running the container with docker run, 0:09
    we use the -p option to publish the exposed port to a port on the Docker host. 0:12
    So to publish the exposed port 8080 as port 8080 on our host, 0:18
    we run docker run -p 8080:8080 sample-web-app. 0:24

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