Run a Docker Image as a Container

 

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

New to docker so probably a misunderstanding on my end, any help would be great.

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

$ docker images
root@dockertest:~# 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 https://docs.docker.com/engine/reference/run/ for more information.

Do following steps :

  • $ docker images

    you will get list of all local docker images with tags specified.

  • $ docker run image_name:tag_name

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

    Instead of image_name you can also specify Image Id (no tag_name).

  • To list the docker images 
    •  $ docker images
  • If your application wants to run in 80 port 
    • $ docker run -d --restart=always -p 80:80 image_name:version
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