Merge two release related workflows into one

.github/workflows/docker.yml

@@ -1,5 +1,6 @@
-name: Upload Docker images to ghcr.io
-on:
+---
+name: Create new release
+'on':
   release:
     types: [published]
   workflow_dispatch:
@@ -12,6 +13,13 @@ jobs:
   docker:
     name: Build image
     runs-on: ubuntu-latest
+    # https://docs.github.com/en/actions/use-cases-and-examples/publishing-packages/publishing-docker-images#publishing-images-to-github-packages
+    permissions:
+      packages: write
+      contents: read
+      attestations: write
+      id-token: write
+
     steps:
       - name: Check out code
         uses: actions/checkout@v4
@@ -45,3 +53,42 @@ jobs:
           context: .
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+  build:
+    name: Publish assets and packages
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v4
+        name: Checkout
+        with:
+          # Otherwise there's a risk to not get latest tag
+          # We hope, that the current commit at
+          # least 100 commits close to the latest release
+          fetch-depth: 100
+          fetch-tags: ${{ inputs.ref != '' }}
+          ref: ${{ inputs.ref }}
+      - name: Set up Go 1
+        uses: actions/setup-go@v5
+        with:
+          go-version: ^1
+      - name: Build packages
+        id: build
+        run: |
+          go install github.com/goreleaser/nfpm/v2/cmd/nfpm@v2.40.0
+          make -e CGO_ENABLED=0 packages
+      - name: Upload release assets
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          TAG="${{ inputs.ref && inputs.ref || github.event.release.tag_name }}"
+          gh release upload --clobber --repo ${{ github.repository }} "$TAG" \
+              out/*.deb out/*.rpm out/*sum
+      - name: Upload packages to packagecloud.com
+        env:
+          PACKAGECLOUD_TOKEN: ${{ secrets.PACKAGECLOUD_TOKEN }}
+        run: |
+          go install github.com/mlafeldt/pkgcloud/cmd/pkgcloud-push@e79e9efc
+          make packagecloud-stable