chore: Automate docker image build

.github/workflows/container-scan.yml

@@ -13,20 +13,30 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+
       - name: Install Docker
         run: |
           apt-get update
-          apt-get install -y docker.io
-          rm -rf /var/lib/apt/lists/*
+          apt-get install -y ca-certificates curl
+          install -m 0755 -d /etc/apt/keyrings
+          curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
+          chmod a+r /etc/apt/keyrings/docker.asc
+          echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
+          apt-get update
+          apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+
       - name: Build an image from Dockerfile
         run: docker build -t git.dominikstahl.dev/dhbw-we/meetup:${{ github.sha }} .
+
       - name: Install Trivy
         run: |
           curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin v0.61.0
+
       - name: Run Trivy vulnerability scanner
         run: |
           trivy image --exit-code 1 --severity HIGH,CRITICAL,MEDIUM --ignore-unfixed --no-progress --format table git.dominikstahl.dev/dhbw-we/meetup:${{ github.sha }}
           trivy image --exit-code 1 --severity HIGH,CRITICAL,MEDIUM --ignore-unfixed --no-progress --format json git.dominikstahl.dev/dhbw-we/meetup:${{ github.sha }} > trivy-report.json
+
       - name: Upload Trivy report
         uses: forgejo/upload-artifact@v4
         with: