ci: Fixing alpine build-test failure (#902)

* optional alpine test + limited concurrency

.github/workflows/build.yml

@@ -122,6 +122,9 @@ jobs:
   build-alpine-and-test:
     runs-on: ["ubuntu-latest"]
     timeout-minutes: 30
+    if: startsWith(github.ref, 'refs/tags/') || startsWith(github.ref, 'refs/heads/develop')
+    concurrency:
+      group: "alpine-build-test"
     steps:
       - uses: actions/checkout@v3
 
@@ -159,13 +162,15 @@ jobs:
             g++
             libusb-dev 
             linux-headers
+            git
           shell-name: alpine.sh
 
       - name: setup-git-credentials
         uses: de-vri-es/[email protected]
         with:
           credentials: ${{ secrets.PAT_GITHUB_SERVICE_ACCT }}
 
+
       - name: Build zetacored and zetaclientd
         env:
           CGO_ENABLED: 1
@@ -174,6 +179,7 @@ jobs:
         shell: alpine.sh --root {0}
         run: |
           apk add --no-cache --update
+          make clean
           go mod tidy
           make clean
           make install-testnet
@@ -203,6 +209,7 @@ jobs:
           path: |
             zetacored-alpine-*
             zetaclientd-alpine-*
+            
       - name: Clean Up Alpine Workspace
         if: always()
         shell: alpine.sh --root {0}