Week 13 - Systems

App Development lifecycle

Continuous integration (CI)

Continuous Delivery (CD)

Packaging and Docker

Docker setup

Building an API server

Deployments

Intro to Cloud

Using local LLMs

Appendix 1 yaml syntax

Appendix 2 Docker commands

Practice

Assignment

Core program

YAML Syntax Reference

Running Containers

Command What it does
docker run <image> Download (if needed) and run a container
docker run -d <image> Run in the background (detached mode)
docker run -p 3000:80 <image> Map port 80 in the container to port 3000 on your machine
docker run -it <image> Run with interactive terminal (for CLI tools)
docker run --name myapp <image> Give the container a custom name
docker run --rm <image> Automatically remove the container when it stops

Managing Containers

Command What it does
docker ps List running containers
docker ps -a List all containers (including stopped)
docker stop <id or name> Stop a running container
docker start <id or name> Start a stopped container
docker rm <id or name> Remove a stopped container
docker logs <id or name> View container output / logs
docker exec -it <id> bash Open a terminal inside a running container

Images

Command What it does
docker pull <image> Download an image from Docker Hub
docker images List downloaded images
docker rmi <image> Remove an image
docker build -t myapp . Build an image from a Dockerfile in the current directory

Cleanup

Command What it does
docker stop $(docker ps -q) Stop all running containers
docker system prune Remove all stopped containers, unused images, and cache

Quick Reference: Flags

Flag Short for Example
-d detached Run in background
-p port -p host:container
-it interactive + tty Opens a terminal
-v volume -v ./local:/container mount a folder
--name — Give container a name
--rm — Auto-remove when stopped
-t tag Name your image during build

Typical Workflow

docker pull nginx              # 1. Download an image
docker run -dp 8080:80 nginx   # 2. Run it
docker ps                      # 3. Check it's running
# visit localhost:8080
docker stop <id>               # 4. Stop when done
docker rm <id>                 # 5. Clean up

The HackYourFuture curriculum is licensed under CC BY-NC-SA 4.0 *https://hackyourfuture.net/*

CC BY-NC-SA 4.0 Icons

Built with ❤️ by the HackYourFuture community · Thank you, contributors

Found a mistake or have a suggestion? Let us know in the feedback form.