Utilise YAML anchors to reduce repeats of certain steps

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

.github/workflows/build-and-publish.yml

@@ -40,17 +40,20 @@ jobs:
           platform=${{ matrix.platform }}
           echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
 
-      - name: Checkout Repo
+      - &checkout-repo
+        name: Checkout Repo
         if: github.event_name != 'schedule'
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 #v5.0.0
 
-      - name: Checkout dev branch if scheduled
+      - &checkout-dev
+        name: Checkout dev branch if scheduled
         if: github.event_name == 'schedule'
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 #v5.0.0
         with:
           ref: development
 
-      - name: Docker meta
+      - &docker-meta
+        name: Docker meta
         id: meta
         uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f #v5.8.0
         with:
@@ -62,17 +65,18 @@ jobs:
             latest=${{ startsWith(github.ref, 'refs/tags/') }}
           tags: |
             type=schedule,pattern=nightly
-            type=ref,event=branch,enable=${{ github.event_name != 'schedule' }},pattern=nightly
+            type=raw,value=nightly,enable=${{ github.event_name == 'push' }}
             type=ref,event=tag
 
-      -
+      - &login-dockerhub
         name: Login to Docker Hub
         uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef #v3.6.0
         with:
           registry: docker.io
           username: ${{ secrets.DOCKERHUB_USER }}
           password: ${{ secrets.DOCKERHUB_PASS }}
-      -
+
+      - &login-ghcr
         name: Login to GitHub Container Registry
         uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef #v3.6.0
         with:
@@ -85,7 +89,8 @@ jobs:
         with:
           platforms: ${{ matrix.platform}}
 
-      - name: Set up Docker Buildx
+      - &setup-buildx
+        name: Set up Docker Buildx
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 #v3.11.1
 
       - name: Build container and push by digest
@@ -126,15 +131,8 @@ jobs:
     needs:
       - build
     steps:
-      - name: Checkout Repo
-        if: github.event_name != 'schedule'
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 #v5.0.0
-
-      - name: Checkout dev branch if scheduled
-        if: github.event_name == 'schedule'
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 #v5.0.0
-        with:
-          ref: development
+      - *checkout-repo
+      - *checkout-dev
 
       - name: Download digests
         uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 #v5.0.0
@@ -143,38 +141,10 @@ jobs:
           pattern: digests-*
           merge-multiple: true
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 #v3.11.1
-
-      - name: Docker meta
-        id: meta
-        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f #v5.8.0
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          images: |
-            ${{ env.dockerhub }}
-            ${{ env.ghcr }}
-          flavor: |
-            latest=${{ startsWith(github.ref, 'refs/tags/') }}
-          tags: |
-            type=schedule,pattern=nightly
-            type=ref,event=branch,enable=${{ github.event_name != 'schedule' }},pattern=nightly
-            type=ref,event=tag
-
-      -
-        name: Login to Docker Hub
-        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef #v3.6.0
-        with:
-          registry: docker.io
-          username: ${{ secrets.DOCKERHUB_USER }}
-          password: ${{ secrets.DOCKERHUB_PASS }}
-      -
-        name: Login to GitHub Container Registry
-        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef #v3.6.0
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+      - *setup-buildx
+      - *docker-meta
+      - *login-dockerhub
+      - *login-ghcr
 
       - name: Create manifest list and push (DockerHub and GitHub Container Registry)
         working-directory: /tmp/digests