Lab 9

Basic Docker

• test basic index.js
• Install docker
• Build Docker image with with docker build -t hello-docker . -t == tagged give it a name.
• View your image with docker image ls hello-docker
• Run with docker run -d -p 3000:3000 hello-docker -d == detached : run in background. -p map it to our 3000 port.
• View with docker container ls
• Stop with docker stop <container id>
• Push your docker image with docker push https://docs.docker.com/engine/reference/commandline/push/
• Run your image off of dockerhub docker run -p 3000:3000 <username>/hello-docker:v1
• Try running someone else's image

Inspecting docker containers

• Get into your contaienr with docker exec -it <id> sh // it = interactive :gives terminal inside the docker.
• You can now navigate and run commands from inside the container
• To get out, exit
• To view running logs docker logs <id>

Docker Swarm

• Enter swarm mode with docker swarm init // Make it a swarm manager.
• Try to join a swarm with docker swarm join --token xxx
• Deploy stack with docker stack deploy -c docker-compose.yml swarm-of-hellos
• View status with docker service ls
• Change replicas and redeploy
• Turn off stack with docker stack remove swarm-of-hellos
• Leave swarm with docker swarm leave --force

Run on aws

• Install docker with sudo snap install docker
• Run with sudo docker run -d -p 80:3000 <username>/hello-docker:v1
• If you want to run the full stack, you will need the docker-compose.yml file

TODO

• Install redis client
• To index.js, add a redis connection to the redis container
• Commit and push