Static binary

watchdog/.gitignore

+fwatchdog

watchdog/Dockerfile

-FROM alpine:edge
+FROM alpine:latest
+ENTRYPOINT []
 
 COPY ./fwatchdog /usr/bin/fwatchdog
-ENV fprocess "cat -b"
+ENV fprocess "cat"
+
 
 EXPOSE 8080
-CMD ["fwatchdog"]
+CMD ["/usr/bin/fwatchdog"]

watchdog/Dockerfile.build

 FROM golang:1.7.3
-RUN mkdir -p /go/src/fwatchdog
-COPY main.go /go/src/fwatchdog
-WORKDIR /go/src/fwatchdog
+RUN mkdir -p /go/src/app
+COPY main.go /go/src/app
+WORKDIR /go/src/app
 RUN go get -d -v
-RUN go build
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .

watchdog/build.sh

@@ -2,6 +2,5 @@
 
 docker build -t watchdog:latest . -f Dockerfile.build
 docker create --name buildoutput watchdog:latest
-docker cp buildoutput:/go/src/fwatchdog/fwatchdog ./
+docker cp buildoutput:/go/src/app/app ./fwatchdog
 docker rm buildoutput
-