github: test build lxd-migrate prior to pushing to LP

Signed-off-by: Simon Deziel <[email protected]>

.github/workflows/builds.yml

@@ -1,5 +1,6 @@
 name: Builds
 on:
+  pull_request:
   push:
     branches:
       - latest-edge
@@ -8,9 +9,28 @@ permissions:
   contents: read
 
 jobs:
+  lxd-migrate:
+    name: Test lxd-migrate build
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.18.x
+
+      - name: Test lxd-migrate build
+        run: |
+          set -eux
+          cd ~/work/lxd/lxd-migrate
+          CGO_ENABLED=0 go build -v -tags netgo
+
   snap:
     name: Trigger snap build
     runs-on: ubuntu-22.04
+    needs: lxd-migrate
     if: ${{ github.repository == 'canonical/lxd-pkg-snap' && github.event_name == 'push' && github.actor != 'dependabot[bot]' }}
     steps:
       - name: Checkout code