Add echo function so its built multiarch

Signed-off-by: Alistair Hey <alistair@heyal.co.uk>

chart/openfaas-cloud/values.yaml

@@ -6,7 +6,7 @@ ofBuilder:
   replicas: 1
 
 buildKit:
-  image: moby/buildkit:v0.6.2
+  image: moby/buildkit:v0.7.2
   privileged: true
 
 

chart/test/core_of_builder_dep_test.go

@@ -11,7 +11,7 @@ func Test_CoreOFBuilderDep_NonHttpProbe(t *testing.T) {
 		"--set", "buildKit.privileged=false",
 	}
 
-	want := makeOFBuilderDep(false, true, 5, "false", "moby/buildkit:v0.6.2")
+	want := makeOFBuilderDep(false, true, 5, "false", "moby/buildkit:v0.7.2")
 	runYamlTest(parts, "./tmp/openfaas-cloud/templates/ofc-core/of-builder-dep.yaml", want, t)
 }
 

echo/handler.go

@@ -0,0 +1,10 @@
+package function
+
+import (
+	"fmt"
+)
+
+// Handle a serverless request
+func Handle(req []byte) string {
+	return fmt.Sprintf("%s", string(req))
+}

stack.yml

@@ -149,7 +149,7 @@ functions:
       read_debug: true
       combine_output: false
       validate_hmac: true
-      debug_token: true
+      debug_token: false
     environment_file:
       - gateway_config.yml
       - github.yml
@@ -247,22 +247,6 @@ functions:
       memory: 32Mi
       cpu: 50m
 
-  echo:
-    skip_build: true
-    image: functions/alpine:latest
-    fprocess: cat
-    labels:
-      openfaas-cloud: "1"
-      com.openfaas.scale.zero: false
-    environment:
-      write_debug: true
-      read_debug: true
-    limits:
-      memory: 128Mi
-    requests:
-      memory: 32Mi
-      cpu: 50m
-
   metrics:
     lang: go
     handler: ./metrics
@@ -302,3 +286,20 @@ functions:
     requests:
       memory: 32Mi
       cpu: 50m
+
+  echo:
+    lang: go
+    handler: ./echo
+    image: ghcr.io/${REPO:-openfaas}/ofc-echo:${TAG:-dev}
+    labels:
+      openfaas-cloud: "1"
+      com.openfaas.scale.zero: false
+    environment:
+      write_debug: true
+      read_debug: true
+    limits:
+      memory: 128Mi
+    requests:
+      memory: 32Mi
+      cpu: 50m
+