Update Dependencies

- Go 1.8 --> 1.9
- Cuberite 630 --> 905 (MC 1.12)
- Debian CA Certs oneliner

Author: luludotdev

Dockerfile

@@ -7,19 +7,18 @@ RUN wget -qO- https://download.docker.com/linux/static/stable/x86_64/docker-${DO
   tar -xvz --strip-components=1 -C /bin
 
 FROM wget AS cuberite
-ARG CUBERITE_BUILD=630
+ARG CUBERITE_BUILD=905
 WORKDIR /srv
 RUN wget -qO- "https://builds.cuberite.org/job/Cuberite Linux x64 Master/${CUBERITE_BUILD}/artifact/Cuberite.tar.gz" |\
   tar -xzf -
 
-FROM golang:1.8 AS dockercraft
+FROM golang:1.9 AS dockercraft
 WORKDIR /go/src/github.com/docker/dockercraft
 COPY . .
 RUN go install
 
 FROM debian:jessie
-RUN apt-get update  
-RUN apt-get install -y ca-certificates
+RUN apt-get update; apt-get install -y ca-certificates
 COPY --from=dockercraft /go/bin/dockercraft /bin
 COPY --from=docker /bin/docker /bin
 COPY --from=cuberite /srv /srv