Fix nomad on alpine

docker/Dockerfile

@@ -1,10 +1,19 @@
-FROM alpine
+FROM alpine:3.5
 ARG NOMAD_VERSION=0.5.2
-RUN apk add --no-cache wget ca-certificates unzip ruby &&\
-  wget -q https://releases.hashicorp.com/nomad/${NOMAD_VERSION}/nomad_${NOMAD_VERSION}_linux_amd64.zip &&\
-  unzip -d /usr/local/bin nomad_${NOMAD_VERSION}_linux_amd64.zip &&\
-  rm nomad_${NOMAD_VERSION}_linux_amd64.zip &&\
-  chmod +x /usr/local/bin/nomad &&\
+RUN apk add --no-cache ruby go make git musl-dev bash &&\
+  mkdir -p /tmp/src/github.com/hashicorp/ &&\
+  cd /tmp/src/github.com/hashicorp/ &&\
+  git clone https://github.com/hashicorp/nomad.git &&\
+  cd nomad &&\
+  git checkout v${NOMAD_VERSION} &&\
+  export GOPATH=/tmp &&\
+  export PATH=/tmp/bin:$PATH &&\
+  make bootstrap &&\
+  make dev &&\
+  make install &&\
+  cd / &&\
+  rm -rf /tmp/* &&\
+  apk del go make git musl-dev bash &&\
   gem install --no-document bedouin
 USER nobody
 ENTRYPOINT ["bedouin"]