Crafting a Dockerfile

Module 3: Docker Part 1 Assignment - 4

Tasks To Be Performed:

1. Create a Dockerfile with the following specs:

• Ubuntu container
• Apache2 installed
• Apache2 should automatically run once the container starts

2. Submit the Dockerfile for assignment completion

Dockerfile:

# Using the Ubuntu base image
FROM ubuntu:latest

# Updating the package list and installing Apache2
RUN apt-get update && apt-get -y install apache2

# Exposing port 80 for Apache2
EXPOSE 80

# Command to run Apache2 in the foreground
CMD ["apachectl", "-D", "FOREGROUND"]

1. I chose to use the ubuntu:latest tag to ensure I’m using the latest version of the Ubuntu image.
2. I combined the RUN commands into one line to make the image more efficient by reducing the number of layers.
3. I decided to go with CMD instead of ENTRYPOINT for starting Apache. This gives me the flexibility to override the command if needed when running the container in the future.