Adding a tag to specify when to build

.github/workflows/build.yml

@@ -1,5 +1,8 @@
 name: Build
-on: [push]
+on:
+    push:
+        tags:
+          - "^test$"
 jobs:
     gobuild:
         runs-on: ubuntu-latest
@@ -10,8 +13,10 @@ jobs:
               uses: actions/setup-go@v3
               with:
                   go-version: '1.21.x'
-            - name: Build
+            - name: Build day one
-              run: go build -v ./*/*.go
+              run: go build -v ./day01/*.go
+            - name: Build day two
+              run: go build -v ./day02/*.go
             - name: Display Go version
               run: go version
             - name: List files in the repository