Split web into Go submodule

Dockerfile

@@ -0,0 +1,14 @@
+# Install dependencies and build
+FROM golang:1.15-alpine AS build_base
+RUN apk add --no-cache git
+WORKDIR /code
+COPY . .
+RUN go mod download
+RUN go build -o ./out/ghostream .
+
+# Production image
+FROM alpine:3.12
+RUN apk add ca-certificates
+COPY --from=build_base /code/out/ghostream /app/ghostream
+EXPOSE 8080
+CMD ["/app/ghostream"]