Git Hooks: Add Docker test setup and update documentation

git-hooks/docker-compose.yml

@@ -0,0 +1,8 @@
+services:
+  gitea_deny_binary_tests:
+    image: ghcr.io/blender/gitea:v1.25.2
+    container_name: gitea_deny_binary_tests
+    working_dir: /workspace
+    command: bash -c "./test/run_deny_binary_tests.sh"
+    volumes:
+      - ./:/workspace