Updated pgsanity ci step

.drone.yml

@@ -7,14 +7,11 @@ steps:
   - name: ameba
     image: veelenga/ameba
     commands:
-      - cd docker/backend/
       - ameba
   - name: pgsanity
-    image: python:alpine
+    image: boechat107/pgsanity
     commands:
-      - apk add libecpg-dev --no-cache
-      - pip3 install pgsanity
-      - find -name "*.sql" | xargs pgsanity
+      - find "*.sql" | xargs pgsanity
   - name: shellcheck
     image: koalaman/shellcheck-alpine
     commands: