add postgresql container to run tests in

.gitea/workflows/test-backend.yaml

@@ -0,0 +1,29 @@
+name: test-backend
+
+on:
+  push:
+
+jobs:
+  test-x86_64:
+    runs-on: alpine
+    steps:
+      - name: Install tools for testing
+        shell: sh
+        run: |
+          apk --update add git docker docker-compose postgresql
+      - name: Pull postgres docker image
+        shell: sh
+        run: docker pull postgres
+      - name: Pull custom docker image
+        shell: sh
+        run: docker pull 10.5.1.5:5000/sdlc/x86_64
+      - name: Pull repository
+        shell: sh
+        run: |
+          git init
+          git remote add gitea http://10.1.1.1:3000/hasslesstech/sdlc-project
+          git fetch gitea
+          git checkout gitea/master
+      - name: Deploy testing environment
+        shell: sh
+        run: docker-compose -f backend/docker-compose-x86_64.yaml up -d