full-stack-docker

Docker Terminal Commands

To get new images run:

docker pull image_name_here

List all docker images:

docker images

List running containers:

docker ps

List all containers:

docker ps -a

To create a image:

docker build -t image-name path-to-directory-with-dockerfile

docker build -t api_image .

To create a container:

--name gives the container its name
-p allows you to map a localhost port to the container port
-d allows you to run the container detached from the terminal (you can still run commands in the terminall while the container is running)

docker run --name api_container1 -p 8080:8080 -d api_image

-v creates a volume. This maps a folder on our computer to a folder in the container allowing it to pick up changes we make. The second -v creates an anonymous volume which maps the node_modules in our container to folder managed by docker. This allows us to delete our node_modules locally and not delete our node_modules in our container.

docker run --name api_container1 -p 8080:8080 -v /Users/vinibjazevich/Code/docker-fullstack/api:/app -v /app/node_modules -d api_image

To stop a container:

docker stop api_container1

To start a existing container:

docker start api_container1

To delete an image:

docker image rm api_image

To delete an container:

docker container rm api_container1

Delete all images, containers, and clear cache:

docker system prune

To run docker compose file (create all docker images referenced and run containers):

docker compose up

To stop and delete containers but keep images:

docker compose down

To delete containers, images, and volumes:

docker compose down --rmi all -v

Docker Basics

Images (blueprints for containers)

Images contain the following:

runtime environment
application code
any dependencies
extra configuration (env variables)
commands
own file system independent from computer

Parent images:

You can get docker images from docker hub: https://hub.docker.com/search?q=

When a image is ran a container is made from that image:

The app can run the same exact way on every machine because the image kept the exact versions of everything we need.

Dockerfile (set of instructions to create a docker image)

Docker Compose

Containers (box to run app with everything it needs)

Containers run independently from any of the processes on your computer:

To create a new container you need to run an image:

Here you can give the container a name, choose its ports, and provide environment variables.

The left port is our localhost port and the right port is the container port

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