Refactor GitHub Actions build workflow

Updated build workflow to fix apt sources and improve installation steps.

Author: csharpfritz

.github/workflows/build.yml

@@ -15,6 +15,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo rm -f /etc/apt/apt-mirrors.txt
+          echo "deb http://archive.ubuntu.com/ubuntu jammy main restricted universe multiverse" | sudo tee /etc/apt/sources.list
           sudo apt-get update
           sudo apt-get install -y  libvips-dev build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev
       - name: Build Site
@@ -78,3 +79,4 @@ jobs:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
         run: npx netlify-cli deploy --dir=public --prod
 
+