feat: Update Python version to 3.12 and use environment variable for Docker image name

.gitea/workflows/cicache.yml

@@ -15,6 +15,7 @@ jobs:
       DB_NAME: calminer_test
       DB_USER: calminer
       DB_PASSWORD: calminer_password
+      REGISTRY_CONTAINER_NAME: calminer
     runs-on: ubuntu-latest
 
     services:
@@ -36,7 +37,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: "3.12"
 
       - name: Get pip cache dir
         id: pip-cache
@@ -85,7 +86,7 @@ jobs:
 
       - name: Build Docker image
         run: |
-          docker build -t calminer .
+          docker build -t ${{ env.REGISTRY_CONTAINER_NAME }} .
 
   build:
     runs-on: ubuntu-latest