ref(Dockerfile,README): rebase image on Ubuntu:16.04

Author: mboersma

README.md

@@ -10,29 +10,30 @@ creating [issues][] and submitting [pull requests][].
 
 ## Image Contents
 
-* based on the [official go Docker image][]
-* [dep][]: go dependency management tool
-* [gb][]: project-based build tool for go
-* [ginkgo][]: BDD testing framework for go
-* [glide][]: go dependency management tool
-* [golint][]: go source code linter
-* [gox][]: simple go cross-compiling tool
+* based on the [official Go Docker image][]
+* [az][]: Azure cloud command-line tool
+* [dep][]: Go dependency management tool
+* [Docker][]: Docker binaries to be able to bind mount /var/run/docker.sock in the dev environment container
+* [gb][]: project-based build tool for Go
+* [ginkgo][]: BDD testing framework for Go
+* [glide][]: Go dependency management tool
+* [golint][]: Go source code linter
+* [gometalinter][]: run Go lint tools concurrently
+* [gox][]: simple Go cross-compiling tool
 * [helm][]: Kubernetes package manager
 * [jq][]: command-line JSON processor
 * [jwt][]: tool for creating and parsing JSON Web Tokens
 * [kubectl][]: Kubernetes command-line client
+* [ruby][]: ruby scripting language
 * [shellcheck][]: static analysis for shell scripts
 * [shyaml][]: YAML access from the command line
-* [test-cover.sh][]: test coverage for multiple go packages
+* [test-cover.sh][]: test coverage for multiple Go packages
 * [upx][]: executable packer
-* [az][]: Azure cloud command-line tool
-* [Docker][]: Docker binaries to be able to bind mount /var/run/docker.sock in the dev environment container
 * [vim][]: text editor
-* [ruby][]: ruby scripting language
 
 ## Usage
 
-Mount your local go code into a container's `$GOPATH` to run any `go` command or one of the
+Mount your local Go code into a container's `$GOPATH` to run any `go` command or one of the
 included tools or scripts. Here's an example of running `glide up` for deis/builder:
 
 ```console
@@ -59,25 +60,26 @@ The latest deis/go-dev Docker image is available at:
 [Deis Workflow]: https://deis.com/
 [dep]: https://github.com/golang/dep
 [Docker Hub]: https://hub.docker.com
+[Docker]: http://www.docker.com
 [gb]: https://github.com/constabulary/gb/
 [gen-changelog.sh]: https://github.com/deis/docker-go-dev/tree/master/rootfs/usr/local/bin/gen-changelog.sh
 [ginkgo]: https://github.com/onsi/ginkgo
 [glide]: https://github.com/Masterminds/glide
 [Go]: https://golang.org/
 [golint]: https://github.com/golang/lint
+[gometalinter]: https://github.com/alecthomas/gometalinter
 [gox]: https://github.com/mitchellh/gox
 [helm]: https://github.com/kubernetes/helm
 [issues]: https://github.com/deis/docker-go-dev/issues
 [jq]: https://stedolan.github.io/jq/
 [jwt]: https://github.com/dgrijalva/jwt-go
 [kubectl]: https://kubernetes.io/docs/user-guide/kubectl-overview/
-[official go Docker image]: https://hub.docker.com/_/golang/
+[official Go Docker image]: https://hub.docker.com/_/golang/
 [pull requests]: https://github.com/deis/docker-go-dev/pulls
 [Quay.io]: https://quay.io
+[ruby]: https://www.ruby-lang.org/
 [shellcheck]: https://github.com/koalaman/shellcheck
 [shyaml]: https://github.com/0k/shyaml
 [test-cover.sh]: https://github.com/deis/docker-go-dev/tree/master/rootfs/usr/local/bin/test-cover.sh
 [upx]: http://upx.sourceforge.net/
-[Docker]: http://www.docker.com
 [vim]: http://www.vim.org/
-[ruby]: https://www.ruby-lang.org/

rootfs/Dockerfile

@@ -1,4 +1,4 @@
-FROM quay.io/deis/base:v0.3.6
+FROM ubuntu:16.04
 
 ENV AZCLI_VERSION=2.0.30 \
     GO_VERSION=1.10.1 \
@@ -11,29 +11,39 @@ ENV AZCLI_VERSION=2.0.30 \
     PATH=$PATH:/usr/local/go/bin:/go/bin:/usr/local/bin/docker \
     GOPATH=/go
 
-RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
-  build-essential \
-  git-core \
-  mercurial \
-  util-linux \
-  jq \
-  libffi-dev \
-  libssl-dev \
-  man \
-  python \
-  python-dev \
-  python-pip \
-  python-setuptools \
-  unzip \
-  upx \
-  wget \
-  zip \
-  openssh-client \
-  rsync \
-  vim \
-  ruby \
-  --no-install-recommends \
-  && rm -rf /var/lib/apt/lists/* \
+# This is a huge one-liner to optimize the Docker image layer.
+# We disable source repos to speed up apt-get update.
+RUN \
+  sed -i -e 's/^deb-src/#deb-src/' /etc/apt/sources.list && \
+  export DEBIAN_FRONTEND=noninteractive && \
+  apt-get update && \
+  apt-get upgrade -y --no-install-recommends && \
+  apt-get install -y --no-install-recommends \
+    bash \
+    build-essential \
+    ca-certificates \
+    curl \
+    git-core \
+    jq \
+    libffi-dev \
+    libssl-dev \
+    man \
+    mercurial \
+    net-tools \
+    openssh-client \
+    procps \
+    python \
+    python-dev \
+    python-pip \
+    python-setuptools \
+    rsync \
+    ruby \
+    unzip \
+    upx \
+    util-linux \
+    vim \
+    wget \
+    zip \
   && curl -L https://storage.googleapis.com/golang/go$GO_VERSION.linux-amd64.tar.gz | tar -C /usr/local -xz \
   && curl -sSL https://github.com/Masterminds/glide/releases/download/$GLIDE_VERSION/glide-$GLIDE_VERSION-linux-amd64.tar.gz \
     | tar -vxz -C /usr/local/bin --strip=1 \
@@ -50,30 +60,28 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     | tar -vxz -C /usr/local/bin --strip=1 \
   && mkdir -p /go/bin \
   && curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh \
-  && apt-get purge -y --auto-remove \
-    unzip \
-  && apt-get autoremove -y \
-  && apt-get clean -y \
-  && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/man /usr/share/doc \
   && curl -fsSLO https://get.docker.com/builds/Linux/x86_64/docker-17.05.0-ce.tgz \
   && tar xzvf docker-17.05.0-ce.tgz -C /usr/local/bin \
   && chmod +x -R /usr/local/bin/docker \
   && rm docker-17.05.0-ce.tgz \
   && go get -u -v \
-  github.com/onsi/ginkgo/ginkgo \
-  github.com/mitchellh/gox \
-  github.com/golang/protobuf/protoc-gen-go \
-  github.com/haya14busa/goverage \
-  github.com/constabulary/gb/... \
-  github.com/dgrijalva/jwt-go/cmd/jwt \
-  github.com/axw/gocov/gocov \
-  github.com/AlekSi/gocov-xml \
+    github.com/AlekSi/gocov-xml \
+    github.com/axw/gocov/gocov \
+    github.com/constabulary/gb/... \
+    github.com/dgrijalva/jwt-go/cmd/jwt \
+    github.com/golang/protobuf/protoc-gen-go \
+    github.com/haya14busa/goverage \
+    github.com/mitchellh/gox \
+    github.com/onsi/ginkgo/ginkgo \
   && curl -fsSLO https://github.com/alecthomas/gometalinter/releases/download/v${GOMETALINTER_VERSION}/gometalinter-${GOMETALINTER_VERSION}-linux-amd64.tar.gz \
   && tar xzvf gometalinter-${GOMETALINTER_VERSION}-linux-amd64.tar.gz --strip-components=1 -C /usr/local/bin \
   && ln -s /usr/local/bin/gometalinter /usr/local/bin/gometalinter.v2 \
   && rm gometalinter-${GOMETALINTER_VERSION}-linux-amd64.tar.gz \
   && pip install --disable-pip-version-check --no-cache-dir azure-cli==${AZCLI_VERSION} shyaml \
-  && apt-get purge --auto-remove -y libffi-dev python-dev python-pip
+  && apt-get purge --auto-remove -y libffi-dev python-dev python-pip unzip \
+  && apt-get autoremove -y \
+  && apt-get clean -y \
+  && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/man /usr/share/doc
 
 WORKDIR /go