Docker for Web Developers

Day 1: First contact with Docker and fundamentals

• Introduction to Docker containers.
• Differences from traditional virtualisation solutions.
• Benefits of Docker.
• Docker tools.
• Image and container concepts.
• Working with images and containers from Docker Hub.
• Introduction to Dockerfiles.

Labs:

• Installing a development environment with Docker Toolbox.
• Using Docker Machine and Docker Client.
• Basic commands and working with and searching for images.

Day 2: Docker layers, images, containers, volumes and file systems

• Overview of Docker's layered architecture and file system.
• Containers and volumes.
• Source code, volumes and containers.
• Linking source code to a Docker volume.
• Deleting volumes and containers.
• Implementation best practices for Dockerised web applications.
• Summary.

Labs:

• Implementing a Node.js/Express stack and running it in a Docker container.

Day 3: Building your first Docker images with Dockerfiles

• Introduction.
• Dockerfile structure and description.
• Docker best practices.
• Docker Build.
• Docker Hub: creating your private repository.
• Environment variables in a Dockerfile.
• Summary.

Labs:

• Creating a customised Node.js Dockerfile for the case study.
• Building a Node.js image.
• Publishing your image to Docker Hub.

Day 4: Inter-container communication

• Introduction to Docker Compose.
• Container linking mechanisms.
• Orchestrating containers with Docker Compose.
• The docker-compose.yml file.
• Docker Compose commands.
• Complex orchestration with Docker Compose.

Additional module: Docker networking: network configuration and exposing ports and network interfaces.

Labs:

• Creating and configuring the service orchestration environment.
• Configuring the Docker Compose file with MongoDB and Node.js containers.