added docker support

Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:1.11.1-alpine
+
+WORKDIR /go/src/github.com/mgerb/ServerStatus
+ADD . .
+RUN apk add --no-cache git alpine-sdk
+RUN go get -u github.com/golang/dep/cmd/dep
+RUN dep ensure
+RUN make linux
+
+
+FROM alpine:3.8
+
+RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
+WORKDIR /server-status
+COPY --from=0 /go/src/github.com/mgerb/ServerStatus/dist/ServerStatus-linux .
+ENTRYPOINT ./ServerStatus-linux
+