Support NATS.io streaming on ARMHF

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

docker-compose.extended.armhf.yml

+version: "3.2"
+services:
+    gateway:
+        volumes:
+            - "/var/run/docker.sock:/var/run/docker.sock"
+        ports:
+            - 8080:8080
+        image: functions/gateway:0.6.7-armhf
+        networks:
+            - functions
+        environment:
+            dnsrr: "true"  # Temporarily use dnsrr in place of VIP while issue persists on PWD
+            faas_nats_address: "nats"
+            faas_nats_port: 4222
+        # Start Add for NATS Streaming
+        depends_on:
+            - nats
+        deploy:
+            restart_policy:
+                condition: on-failure
+                delay: 5s
+                max_attempts: 20
+                window: 380s
+            placement:
+                constraints:
+                    - 'node.role == manager'
+                    - 'node.platform.os == linux'
+
+    nats:
+        image: nats-streaming:0.6.0
+        ports:
+            - 4222:4222
+            - 8222:8222
+        command: "--store memory --cluster_id faas-cluster"
+        networks:
+            - functions
+        deploy:
+            placement:
+                constraints:
+                    - 'node.platform.os == linux'
+
+    queue-worker:
+        image: alexellis2/nats-queue-worker:0.1-armhf
+        networks:
+            - functions
+        deploy:
+            restart_policy:
+                condition: on-failure
+                delay: 5s
+                max_attempts: 20
+                window: 380s
+            placement:
+                constraints:
+                    - 'node.platform.os == linux'
+
+    prometheus:
+        image: alexellis2/prometheus-armhf:1.5.2
+        volumes:
+            - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+            - ./prometheus/alert.rules:/etc/prometheus/alert.rules
+
+        command: "-config.file=/etc/prometheus/prometheus.yml -storage.local.path=/prometheus -storage.local.memory-chunks=10000 --alertmanager.url=http://alertmanager:9093"
+        ports:
+            - 9090:9090
+        depends_on:
+            - gateway
+            - alertmanager
+        environment:
+            no_proxy:   "gateway"
+        networks:
+            - functions
+        deploy:
+            placement:
+                constraints: [node.role == manager]
+
+
+    alertmanager:
+        image: alexellis2/alertmanager-armhf:0.5.1
+        environment:
+            no_proxy:   "gateway"
+        volumes:
+            - ./prometheus/alertmanager.yml:/alertmanager.yml
+        command:
+            - '-config.file=/alertmanager.yml'
+        networks:
+            - functions
+        ports:
+            - 9093:9093
+        deploy:
+            placement:
+                constraints: [node.role == manager]
+
+# sample functions go here, but can be created in the UI too.
+    nodeinfo:
+        image: functions/nodeinfo:latest-armhf
+        labels:
+            function: "true"
+        depends_on:
+            - gateway
+        networks:
+            - functions
+        environment:
+            no_proxy:   "gateway"
+            https_proxy: $https_proxy
+
+
+networks:
+    functions:
+        driver: overlay
+        #attachable: true

gateway/Dockerfile.armhf

@@ -10,7 +10,8 @@ COPY requests       requests
 COPY tests          tests
 COPY server.go      .
 COPY types          types
-COPY plugin  plugin
+COPY plugin  	    plugin
+COPY queue  	    queue
 
 RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o gateway .