Updated and improved Dockerfile

Dockerfile

@@ -1,14 +1,27 @@
-FROM alpine:3.5
+# Use Alpine Linux
+FROM golang:1.9-alpine as builder 
 
-ADD . /go-ubiq
-RUN \
-  apk add --update git go make gcc musl-dev linux-headers && \
-  (cd go-ubiq && make gubiq)                           && \
-  cp go-ubiq/build/bin/gubiq /gubiq                     && \
-  apk del git go make gcc musl-dev linux-headers          && \
-  rm -rf /go-ubiq && rm -rf /var/cache/apk/*
+# Install basic dependencies
+RUN apk update
+RUN apk add --no-cache wget
+RUN wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://raw.githubusercontent.com/sgerrand/alpine-pkg-glibc/master/sgerrand.rsa.pub
 
-EXPOSE 8588
-EXPOSE 30388
+# Add glibc dependency as previous to 1.6 Geth needs it in order to compile and work properly
+RUN wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.25-r0/glibc-2.25-r0.apk
+RUN apk add --no-cache make gcc musl-dev linux-headers git glibc-2.25-r0.apk
 
-ENTRYPOINT ["/gubiq"]
+# Fetch Gubiq source and build it
+RUN git clone https://github.com/ubiq/go-ubiq go-ubiq/
+RUN cd go-ubiq && make gubiq
+
+# Pull Gubiq into another container
+FROM alpine:latest
+
+RUN apk add --no-cache ca-certificates
+COPY --from=builder /go/go-ubiq/build/bin/gubiq /usr/local/bin/
+
+# Expose ports
+EXPOSE 8588 8588
+
+# Entry point
+ENTRYPOINT ["gubiq"]