Initial work for ARMHF

docker-compose-armhf.yml

+version: "3"
+services:
+    gateway:
+        volumes:
+            - "/var/run/docker.sock:/var/run/docker.sock"
+        ports:
+            - 8080:8080
+        image: alexellis2/faas-gateway:latest-armhf
+        networks:
+        - functions
+
+    prometheus:
+        image: alexellis2/prometheus-armhf:latest
+        volumes:
+            - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+        command: "-config.file=/etc/prometheus/prometheus.yml -storage.local.path=/prometheus -storage.local.memory-chunks=10000"
+        ports:
+            - 9090:9090
+        depends_on:
+            - gateway
+        environment:
+            no_proxy:   "gateway"
+        networks:
+            - functions
+
+networks:
+    functions:
+        driver: overlay
+        # Docker does not support this option yet - maybe create outside of the stack and reference as "external"?
+        #attachable: true

gateway/Dockerfile.build.armhf

+FROM alexellis2/go-armhf:1.7.4
+
+RUN go get -d github.com/docker/docker/api/types \
+   && go get -d github.com/docker/docker/api/types/filters \
+   && go get -d github.com/docker/docker/api/types/swarm \
+   && go get -d github.com/docker/docker/client \
+   && go get github.com/gorilla/mux \
+   && go get github.com/prometheus/client_golang/prometheus
+
+WORKDIR /go/src/github.com/alexellis/faas/gateway
+
+COPY metrics metrics
+COPY server.go .
+
+RUN find /go/src/github.com/alexellis/faas/gateway/
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .

gateway/armhf.build.sh

+#!/bin/sh
+echo Building alexellis2/faas-gateway:build-armhf
+
+docker build --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy \
+    -t alexellis2/faas-gateway:build-armhf . -f Dockerfile.build.armhf
+
+docker create --name gateway_extract alexellis2/faas-gateway:build-armhf echo
+docker cp gateway_extract:/go/src/github.com/alexellis/faas/gateway/app ./gateway
+docker rm -f gateway_extract
+
+echo Building alexellis2/faas-gateway:latest-armhf
+
+docker build -t alexellis2/faas-gateway:latest-armhf .

watchdog/Dockerfile.armhf

+FROM alexellis2/go-armhf:1.7.4
+
+RUN mkdir -p /go/src/app
+COPY main.go /go/src/app
+WORKDIR /go/src/app
+RUN go get -d -v
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .

watchdog/armhf.build.sh

+#!/bin/sh
+
+# Below makes use of "builder pattern" so that binary is extracted separate
+# from the golang runtime/SDK
+
+echo Building alexellis2/faas-watchdog:build-armhf
+
+docker build --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy \
+    -t alexellis2/faas-watchdog:build-armhf . -f Dockerfile.armhf
+docker create --name buildoutput alexellis2/faas-watchdog:build-armhf echo
+docker cp buildoutput:/go/src/app/app ./fwatchdog
+docker rm buildoutput
+

watchdog/build.sh

@@ -5,6 +5,6 @@
 
 docker build --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy \
     -t alexellis2/faas-watchdog:build .
-docker create --name buildoutput alexellis2/faas-watchdog:build
+docker create --name buildoutput alexellis2/faas-watchdog:build echo
 docker cp buildoutput:/go/src/app/app ./fwatchdog
 docker rm buildoutput