Setup postgres service container in CI

.github/workflows/test.yaml

@@ -78,6 +78,43 @@ jobs:
       - name: Test Gnomock connection
         run: curl localhost:23042/stop -d '{"id":"42"}'
 
+
+  test-service-containers:
+    name: "[core] service container"
+    runs-on: ubuntu-latest
+    services:
+      gnomock:
+        image: orlangure/gnomock:v0.20.0-alpha1
+        options: -v /var/run/docker.sock:/var/run/docker.sock
+        ports:
+        - 23042:23042
+    steps:
+      - name: Setup postgres
+        run: |
+          sudo apt-get update -q -y
+          sudo apt-get install -y jq httpie
+          http --ignore-stdin -v :23042/start/postgres 'options[custom_named_ports][default][protocol]=tcp' 'options[custom_named_ports][default][port]:=5432' 'options[custom_named_ports][default][host_port]:=15432' 'options[debug]:=true'
+
+      - name: Connect
+        run: |
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+          sleep 3
+          PGPASSWORD=password psql -h 127.0.0.1 -U postgres -p 15432 -c "select 1;" || true
+
   test-sdk:
     name: "[sdk] python"
     runs-on: ubuntu-latest