sync: add fluxer-build.yaml from wavecat repo

.forgejo/workflows/fluxer-build.yaml

@@ -0,0 +1,37 @@
+name: Build and Push Fluxer
+
+on:
+  workflow_dispatch:
+  repository_dispatch:
+    types: [fluxer-push]
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    container:
+      image: docker:cli
+    steps:
+      - name: Install git
+        run: apk add --no-cache git
+
+      - name: Checkout Fluxer
+        run: |
+          REF=${{ github.event.client_payload.ref || 'refactor' }}
+          git clone --depth 1 --branch "${REF##refs/heads/}" \
+            http://forgejo.tooling.svc.cluster.local:3000/ember/fluxer.git .
+
+      - name: Build container image
+        run: |
+          SHA=${{ github.event.client_payload.sha || 'latest' }}
+          docker build -t 10.70.69.22:30500/ember/fluxer-server:latest \
+                       -t 10.70.69.22:30500/ember/fluxer-server:${SHA} \
+                       --build-arg BASE_DOMAIN="flux.wavecat.org" \
+                       --build-arg FLUXER_CDN_ENDPOINT="" \
+                       --build-arg RELEASE_CHANNEL="stable" \
+                       -f fluxer_server/Dockerfile .
+
+      - name: Push to Zot
+        run: |
+          SHA=${{ github.event.client_payload.sha || 'latest' }}
+          docker push 10.70.69.22:30500/ember/fluxer-server:latest
+          docker push 10.70.69.22:30500/ember/fluxer-server:${SHA}