ci: add docker login step for registry.meghsakha.com

Requires Gitea Actions secrets: REGISTRY_USERNAME, REGISTRY_PASSWORD

.gitea/workflows/build-pitch-deck.yml

@@ -23,6 +23,13 @@ jobs:
           apk add --no-cache git openssl curl
           git clone --depth 1 --branch ${GITHUB_REF_NAME} ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}.git .
 
+      - name: Login to registry
+        env:
+          REGISTRY_USERNAME: ${{ secrets.REGISTRY_USERNAME }}
+          REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
+        run: |
+          echo "$REGISTRY_PASSWORD" | docker login registry.meghsakha.com -u "$REGISTRY_USERNAME" --password-stdin
+
       - name: Build image
         run: |
           cd pitch-deck