Run a Docker image as a container

After building a Docker image from a dockerfile, I see the image was built successfully, but what do I do with it? Shouldn't i be able to run it as a container?

The specific way to run it depends on whether you gave the image a tag/name or not.

$ docker images
REPOSITORY          TAG                 ID                  CREATED             SIZE
ubuntu              12.04               8dbd9e392a96        4 months ago        131.5 MB (virtual 131.5 MB)

With a name (let's use Ubuntu):

$ docker run -i -t ubuntu:12.04 /bin/bash

Without a name, just using the ID:

$ docker run -i -t 8dbd9e392a96 /bin/bash

Please see Docker run reference for more information.

Do the following steps:

1. $ docker images

   You will get a list of all local Docker images with the tags specified.

2. $ docker run image_name:tag_name

   If you didn't specify tag_name it will automatically run an image with the 'latest' tag.

   Instead of image_name, you can also specify an image ID (no tag_name).

• To list the Docker images

  $ docker images
  

• If your application wants to run in with port 80, and you can expose a different port to bind locally, say 8080:

  $ docker run -d --restart=always -p 8080:80 image_name:version