docker_depi_labs - README

Lab 1: Basic Docker Commands & Containers

Problem 1: Hello World Container

• Run a basic hello-world container to verify Docker is working.
• Check container status.
• Restart a stopped container.
• Remove the container and its image.

Problem 2: Running Interactive Containers

• Start an Ubuntu or CentOS container in interactive mode.
• Run echo docker inside the container.
• Create a file named hello-docker.
• Remove the container and note that temporary files are lost.

Problem 3: Deploy MySQL Database

• Run a MySQL container with the name app-database.
• Use the -e flag to set MYSQL_ROOT_PASSWORD.
• Ensure the container runs in detached mode.

Problem 4: Running Nginx with Static Files

• Start an Nginx container.
• Add static HTML files to the container.
• Verify that the files are accessible.
• Commit the changes to create a new image.

Problem 5 (Bonus): Persistent Nginx with Volumes

• Attach a volume for static files.
• Remove the container and reattach the volume.
• Map port 80 to 9898 and access it in the browser.

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Lab 2: Dockerfiles & Custom Images

Problem 1: Nginx with Volumes

• Run an Nginx container with two volumes (HTML files & config).
• Modify the HTML content.
• Restart the container using both volume mount and bind mount.
• Map port 80 to 8080 and verify accessibility.

Problem 2: Custom Nginx Image

• Create a Dockerfile for an Nginx image with custom content.
• Modify the nginx.conf to listen on port 8080 instead of 80.
• Build and run the custom image.

Problem 3: Containerizing a React App

• Create a ReactJS application.
• Write a Dockerfile to containerize it.
• Test the application inside a Docker container.
• Bonus: Optimize the image using multi-stage builds.

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Lab 3: Networking & Push to Docker Hub

Problem 1: ReactJS & Docker Hub

• Build a React app container.
• Push it to Docker Hub.

Problem 2: Ubuntu Sleep Container

• Write a Dockerfile for an Ubuntu image that sleeps by default for 5 seconds.
• Allow the sleep time to be overridden via Docker command-line arguments.
• Implement using ENTRYPOINT and CMD.

Problem 3: Pushing Images to Docker Hub

• Tag and push the images from previous problems to Docker Hub.
• Ensure authentication and correct repository naming.

Problem 4: Bridge Network with Nginx

• Create two Nginx containers on a custom bridge network.
• Use curl from one container to access the other’s content.
• Verify connectivity and test communication.

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How to Run the Labs

1. Clone the repository or create files manually.
2. Follow the steps in each lab.
3. Use docker build, docker run, and docker network commands as required.
4. Verify container output using curl or a web browser.

Let me know if you need modifications! 🚀