Add dockerfile

Dockerfile

@@ -0,0 +1,14 @@
+FROM golang:alpine as builder
+RUN apk add build-base linux-headers git
+RUN mkdir /build
+ADD . /build/
+WORKDIR /build
+RUN go build -o invertergui ./cmd/invertergui
+FROM alpine
+RUN adduser -S -D -H -h /app inverteruser
+RUN addgroup inverteruser dialout
+USER inverteruser
+COPY --from=builder /build/invertergui /app/
+WORKDIR /app
+ENTRYPOINT [ "./invertergui" ]
+CMD []