Cloud Beginner
Docker Tutorial from Scratch¶
DockerContainersDevOps 3 min read
Complete introduction to Docker. Containers, images, volumes, and first deployment.
What Is Docker?¶
Docker packages an application along with everything it needs (code, runtime, libraries) into a container. A container runs the same everywhere — locally, on a server, in the cloud.
First Container¶
# Pull and run Nginx
docker run -d -p 8080:80 nginx
# Custom Dockerfile
FROM node:20-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --production
COPY . .
EXPOSE 3000
CMD ["node", "server.js"]
# Build and run
docker build -t myapp .
docker run -d -p 3000:3000 myapp
Basic Commands¶
docker ps # Running containers
docker images # Local images
docker logs # Container logs
docker exec -it sh # Shell into container
docker stop # Stop container
docker rm # Remove container
Summary¶
Docker is the foundation of modern deployment. Learn Dockerfile, volumes, and networking — the rest will come naturally.
Need Help with Implementation?¶
Our team has experience designing and implementing modern architectures. We’re happy to help.