shreyasxo/drupal_with_bootstrap repository overview

⁠Assignment: Compose For On-The-Fly Image Building and Multi-Container Testing

Goal: Imagine you're just wanting to learn Drupal's admin and GUI, or maybe you're a software tester and you need to test a new theme for Drupal. When configured properly, this will let you build a custom image and start everything with docker-compose up including storing important db and config data in volumes so the site will remember your changes across Compose restarts.

• Build compose file you just as you created in the docker-compose assignment1-2(drupal and postgres) as a starting point.
• Let's pin image version from Docker Hub this time.

⁠Answer:-

⁠Dockerfile

• Build a custom Dockerfile in this directory, FROM drupal
• RUN apt package manager command to install git: apt-get update && apt-get install -y git
• Cleanup after your apt install with rm -rf /var/lib/apt/lists/* and use \ and && properly.
• Change WORKDIR /var/www/html/themes
• git to clone the theme with: RUN git clone --branch 8.x-3.x --single-branch --depth 1 https://git.drupal.org/project/bootstrap.git
• This drupal container runs as www-data user but the build actually runs as root, so often we have to do things like chown to change file owners to the proper user: chown -R www-data:www-data bootstrap.
• Change the working directory back to its default (from drupal image) at /var/www/html

⁠Compose File

• Rename image to drupal.
• We want to build the default Dockerfile in this directory by adding build: to the drupal service.
• Add the context: . to set the image location as a current directory
• For the postgres:latest service, set password = mypasswd, but also add a volume for drupal-data:/var/lib/postgresql/data so the database will persist across Compose restarts.

⁠Start Containers, Configure Drupal

• Start containers like before, configure Drupal web install like before.
• After website comes up, click on Appearance in top bar, and notice a new theme called Bootstrap is there. That's the one we added with our custom Dockerfile.
• Click Install and set as default. Then click Back to site (in top left) and the website interface should look different. You've successfully installed and activated a new theme in your own custom image without installing anything on your host other then Docker!
• If you exit (ctrl-c) and then docker-compose down it will delete containers, but not the volumes, so on next docker-compose up everything will be as it was.
• To totally clean up volumes, add -v to down command.

⁠Extra Credit

• Add one content and see the how drupal works