Add support for docker arm builds. #328

docker/arm/Dockerfile

@@ -0,0 +1,11 @@
+FROM easypi/alpine-arm:edge
+ENTRYPOINT ["/bin/matterbridge"]
+
+COPY . /go/src/github.com/42wim/matterbridge
+RUN apk update && apk add go git gcc musl-dev ca-certificates \
+        && cd /go/src/github.com/42wim/matterbridge \
+        && export GOPATH=/go \
+        && go get \
+        && go build -x -ldflags "-X main.githash=$(git log --pretty=format:'%h' -n 1)" -o /bin/matterbridge \
+        && rm -rf /go \
+        && apk del --purge git go gcc musl-dev