fix(pxc): raise haproxy conn limit (#732)

diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
new file mode 100644
index 0000000..4ff6224
--- /dev/null
+++ b/.github/workflows/check.yml
@@ -0,0 +1,14 @@
+name: check
+
+on:
+  pull_request:
+
+jobs:
+  unit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: go.mod
+      - run: go test -v ./...