Docker Hub provides the base images from which the containerized application can be built (e.g., node, postgres, python, nginx, etc.).
For example:
docker pull node:latest
To run an instance of the Node runtime in the interactive terminal (use Ctrl+D to exit):
docker run -it node
To build an image of the simple server app from the source code of this repository via the Dockerfile (see /Dockerfile), run the following from the top level directory of this repository:
docker build .
(Optional) Add a tag server-app to the image that was created:
docker tag <image-id> server-app
Start a container named instance on http://localhost:3001 from the image server-app (use flag -d to run in detached mode):
sudo docker run -d -p 3001:3000 --name instance server-app
The live app can now be viewed in the browser at http://localhost:3001.
To stop the instance container:
docker stop instance
Build an image from the top-level application directory (i.e., .) containing the Dockerfile:
docker build .
List all images:
docker images
Tag/label an image:
docker tag <image-id> <image-tag>
Remove an image:
docker rmi <image-id | image-tag>
Start up a container from an image (use optional flag -d to run detached, i.e., to prevent transferring out of the terminal):
docker start [-d] -p <routed-port>:<exposed-port> <image-id | image-tag>
List all processes/containers (omitting optional flag -a will only show currently running containers):
docker ps [-a]
Name/label a container:
docker --name <container-name> <container-id>
Stop a running container:
docker stop <container-id | container-name>
Remove a container:
docker rm <container-name | container-id>
An image or container can be inspected for its metadata:
docker inspect <image-id | image-tag | container-id | container-name>