Add postgresql12 ci

.github/workflows/main.yml

@@ -1,8 +1,14 @@
 name: data-services PR testing
 on: push
 jobs:
-  data-services-pg10:
+  data-services:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        pg_version: [10, 12]
+    env:
+        PG_VERSION: ${{ matrix.pg_version }}
+
     steps:
       - uses: actions/checkout@v1
 
@@ -12,7 +18,7 @@ jobs:
           service_account_key: ${{ secrets.GCS }}
 
       - name: Pull base image
-        run: gcloud auth configure-docker && docker pull gcr.io/cartodb-on-gcp-ci-testing/cartodb-postgresql-base:10
+        run: gcloud auth configure-docker && docker pull gcr.io/cartodb-on-gcp-ci-testing/cartodb-postgresql-base:${{ matrix.pg_version }}
 
       - name: Checkout ci tools repository
         uses: actions/checkout@v2
@@ -25,8 +31,8 @@ jobs:
         run: cp ci-tools/repos/${{ github.event.repository.name }}/* .
 
       - name: Start docker-compose services
-        run: docker-compose -f docker-compose-pg10.yaml up -d
+        run: docker-compose -f docker-compose.yaml up -d
 
       - name: Run tests
-        run: docker-compose -f docker-compose-pg10.yaml exec -T postgres-server bash -c "cd /data-services/geocoder/extension && make clean all install installcheck"
+        run: docker-compose -f docker-compose.yaml exec -T postgres-server bash -c "cd /data-services/geocoder/extension && make clean all install installcheck"
         timeout-minutes: 5