CI Cache Implementation (#354)

Caching adding for build and mods. Significantly improves CI `go test -v ./...`.

.github/workflows/ci.yml

@@ -27,9 +27,33 @@ jobs:
         with:
           go-version: 1.18
 
+      - name: go-cache-paths
+        run: |
+          echo "::set-output name=go-build::$(go env GOCACHE)"
+          echo "::set-output name=go-mod::$(go env GOMODCACHE)"
+
+      - name: Cache Go build
+        uses: actions/cache@v3
+        id: mybuild
+        with:
+          path: ~/.cache/go-build
+          key: ${{ runner.os }}-go-build-${{ hashFiles('**/go.sum') }}
+
+      - name: Cache Go Mod
+        uses: actions/cache@v3
+        id: cache
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}
+
       - name: Run go mod download
+        if: steps.cache.outputs.cache-hit != 'true'
         run: go mod download
 
+      - name: Go build
+        if: steps.mybuild.outputs.cache-hit != 'true'
+        run: go build ./...
+
       - name: Get go-licenses
         run: go install github.com/google/go-licenses@latest