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Working with Containers: Docker & Docker Compose

Docker Commit Images

Explore how to work inside a Docker container, make changes like adding a Python script, and then commit those changes to create a new Docker image. Understand the process of saving your container state, pushing images to Docker Hub, and ensuring a consistent environment for sharing and deployment.

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In the last lesson, we got access to the shell of the container and were able to run commands. Since we can use the container like a normal Linux machine, let’s work in it exactly as we work in any normal Linux machine.

If you have exited the container, type docker ps -a and check the first entry or the entry which has bash in its command column.

$ docker ps -a
CONTAINER ID    IMAGE       COMMAND  CREATED      STATUS            PORTS    NAMES
38c22dec7c2a    python:3.5  "bash"   32 seconds ago Exited (0) 6 seconds ago    laughing_grothendieck

Copy the container id and type docker start <container_id>.

$ docker start
...