Update examples to remove Swarm format in stack.yml

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

stack.yml

@@ -1,66 +1,49 @@
 provider:
   name: openfaas
-  gateway: http://127.0.0.1:8080  # can be a remote server
-
-## Note for Kubernetes memory specifications:
-## Run: `sed -ie s/40m/40Mi/g stack.yml`
+  gateway: http://127.0.0.1:8080
 
 functions:
   url-ping:
     annotations:
       test: true
     labels:
-      com.openfaas: 1
+      com.openfaas.scale.min: 1
+      com.openfaas.scale.max: 1
     lang: python
     handler: ./sample/url-ping
-    image: ${DOCKER_USER:-alexellis}/faas-url-ping:0.2
+    image: ${DOCKER_USER:-alexellis2}/url-ping:0.3
     environment:
       debug: true
-
-#    limits:
-#      memory: 40m
 #    requests:
-#      memory: 40m
+#      memory: 32Mi
+#    limits:
+#      memory: 64Mi
 
+  # skip_build is useful for deploying pre-existing images from stack.yml
   stronghash:
     skip_build: true
-    image: functions/alpine:latest
+    image: ghcr.io/openfaas/alpine:latest
     fprocess: "sha512sum"
     environment:
       fprocess: sha512sum
     secrets:
      - test1
-#    limits:
-#      memory: 40m
-#    requests:
-#      memory: 40m
 
   nodejs-echo:
     lang: node
     handler: ./sample/nodejs-echo
-    image: alexellis/faas-nodejs-echo:0.1
-#    limits:
-#      memory: 40m
-#    requests:
-#      memory: 40m
+    image: ${DOCKER_USER:-alexellis2}/nodejs-echo:0.2
 
+  # Example usage:
+  #
   # curl 127.0.0.1:8080/function/shrink-image --data-binary @big.png > smaller.png
   shrink-image:
     lang: dockerfile
     handler: ./sample/imagemagick
-    image: functions/resizer:0.1
+    image: ${DOCKER_USER:-alexellis2}/imagemagick-resizer:0.3
     fprocess: "convert - -resize 50% fd:1"
-#    limits:
-#      memory: 40m
-#    requests:
-#      memory: 40m
 
   ruby-echo:
     lang: ruby
     handler: ./sample/ruby-echo
-    image: alexellis/ruby-echo:0.2
-#    limits:
-#      memory: 40m
-#    requests:
-#      memory: 40m
-
+    image: ${DOCKER_USER:-alexellis2}/ruby-echo:0.3