Question: Here is my problem:

I have a task running a Docker image on Amazon ECS but I would like to make a new Docker image from the running instance of the container.

I see the id of the instance on Amazon ECS; I have made an AMI but I would like to make a new docker image that I can pull from Amazon.

Any ideas?

Regards and thanks.

Answer: 
To create a image from container execute the command below:

> 
> `docker commit container_id imagename`
> 
> 
>
This can be easily done by using "docker commit".

Let's say you need an image, based on the latest from NGINX, with PHP, build-essential, and nano installed. I'll walk you through the process of pulling the image, running the container, accessing the container, adding the software, and committing the changes to a new image that can then be easily used as a base for your dev containers.

Pulling the image and running the container:

```
sudo docker pull nginx
sudo docker run  -it --name nginx-template-base -p 8080:80 nginx

```

Modifying the container:

```
apt-get install nano
​apt-get install php5

```

Commit the changes:

```
sudo docker commit CONTAINER_ID nginx-template

```

The newly created template is ready and you can run using:

```
sudo docker run -it --name nginx-dev -p 8080:80 nginx-template

```