Drop alpine, python versions older than 3.10

Author: tedivm

.github/workflows/image-build.yml

@@ -18,9 +18,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python_versions: ["3.8", "3.9", "3.10", "3.11", "3.12"] 
+        python_versions: ["3.10", "3.11", "3.12"]
         package_versions: ["0.3.0", "0.3.1", "0.4.0", "0.4.1", "0.4.2"]
-        target_base: ["full", "slim", "alpine"]
+        target_base: ["full", "slim"]
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4