added install script + reworked pipeline

.gitea/workflows/test.yaml

@@ -15,8 +15,8 @@ jobs:
           POSTGRES_DB: arbeitszeitmessung
     env:
       POSTGRES_HOST: postgres
-      POSTGRES_USER: root
-      POSTGRES_PASSWORD: password
+      POSTGRES_API_USER: root
+      POSTGRES_API_PASS: password
       POSTGRES_DB: arbeitszeitmessung
       POSTGRES_PORT: 5432
       RUNNER_TOOL_CACHE: /toolcache # Runner Tool Cache
@@ -26,10 +26,7 @@ jobs:
         with:
           # Disabling shallow clone is recommended for improving relevancy of reporting
           fetch-depth: 0
-      - name: Setup go
-        uses: actions/setup-go@v5
-        with:
-          go-version-file: Backend/go.mod
+
       - uses: https://gitea.com/actions/go-hashfiles@v0.0.1
         id: hash-go
         with:
@@ -46,6 +43,10 @@ jobs:
           key: arbeitszeitmessung-${{ steps.hash-go.outputs.hash }}
           restore-keys: |-
             arbeitszeitmessung-
+      - name: Setup go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: Backend/go.mod
       - name: Run Go Tests
         run: cd Backend && mkdir .test && go test ./... -coverprofile=.test/coverage.out -json > .test/report.json
       - name: Verify coverage report exists