Build an xpkg

Signed-off-by: Nic Cope <[email protected]>

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ env:
   # Common versions
   GO_VERSION: '1.21.3'
   GOLANGCI_VERSION: 'v1.54.2'
-  DOCKER_BUILDX_VERSION: 'v0.10.0'
+  DOCKER_BUILDX_VERSION: 'v0.11.2'
 
   # Common users. We can't run a step 'if secrets.AWS_USR != ""' but we can run
   # a step 'if env.AWS_USR' != ""', so we copy these to succinctly test whether
@@ -78,7 +78,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Build Function Runtime
+      - name: Build Runtime
+        id: image
         uses: docker/build-push-action@v5
         with:
           context: .
@@ -89,9 +90,21 @@ jobs:
           build-args:
             GO_VERSION=${{ env.GO_VERSION }}
           load: true
+          tags: function/runtime:${{ github.sha }}
+
+      # TODO(negz): Use the crossplane-contrib/xpkg-action for this? It doesn't
+      # currently do anything other than download the CLI and run a command.
+      - name: Setup the Crossplane CLI
+        run: "curl -sL https://raw.githubusercontent.com/crossplane/crossplane/master/install.sh | sh"
+        env:
+          XP_CHANNEL: master
+          XP_VERSION: current
+
+      # TODO(negz): We must pass index.docker.io explicitly until 
+      # https://github.com/crossplane/crossplane/pull/4867 is fixed.
+      - name: Build Package
+        run: ./crossplane xpkg build --package-root=package/ --embed-runtime-image=index.docker.io/function/runtime:${{ github.sha }}
 
-      # TODO(negz): Build Function package using Crossplane CLI.
-
       - name: Login to Upbound
         uses: docker/login-action@v3
         if: env.XPKG_PUSH_ROBOT_USR != ''