Add startup instructions

.gitea/workflows/ci.yml

@@ -23,23 +23,12 @@ jobs:
       - name: Validate composer.json
         run: composer validate
 
-      - uses: actions/setup-go@v3
-        with:
-          go-version: '1.20'
-
-      - uses: actions/go-hashfiles@v0.0.1
-        id: get-hash
-        with:
-          patterns: |-
-            go.sum
-            **/composer.json      
-
       - name: Cache Composer packages
         id: composer-cache
         uses: actions/cache@v4
         with:
           path: vendor
-          key: ${{ runner.os }}-php-${{ steps.get-hash.outputs.hash }}
+          key: ${{ runner.os }}-php-${{ hashFiles('**/composer.json') }}
           restore-keys: |
             ${{ runner.os }}-php-