Remove unwanted packages

docker/Dockerfile_jessie_packer

@@ -4,37 +4,20 @@ MAINTAINER GitLab Inc. <support@gitlab.com>
 # Install required packages
 RUN apt-get update -q
 RUN DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends \
-      build-essential \
       zlib1g-dev \
-      byacc \
-      cmake \
-      python-pip \
       git \
       gcc \
       libssl-dev \
-      libyaml-dev \
-      libffi-dev \
       libreadline-dev \
-      libgdbm-dev \
-      libncurses5-dev \
       make \
-      bzip2 \
       curl \
       ca-certificates \
       locales \
-      openssh-server \
       libcurl4-openssl-dev \
       libexpat1-dev \
       gettext \
-      libz-dev \
       libssl-dev \
-      fakeroot \
-      python-dev \
-      ccache \
-      distcc \
-      apt-transport-https \
-      unzip \
-      wget && apt-get -yq clean
+      unzip && apt-get -yq clean
 RUN echo "en_US.UTF-8 UTF-8" > /etc/locale.gen
 RUN locale-gen en_US.UTF-8
@@ -69,8 +52,7 @@ RUN mkdir -p /opt/gitlab /var/cache/omnibus ~/.ssh
 RUN git config --global user.email "packages@gitlab.com"
 RUN git config --global user.name "GitLab Inc."
-RUN wget https://releases.hashicorp.com/packer/0.12.2/packer_0.12.2_linux_amd64.zip && \
-    unzip packer_0.12.2_linux_amd64.zip -d /usr/local/bin && \
-    rm packer_0.12.2_linux_amd64.zip
+RUN curl -Lo /tmp/packer.zip https://releases.hashicorp.com/packer/0.12.2/packer_0.12.2_linux_amd64.zip && \
+    unzip /tmp/packer.zip -d /usr/local/bin
 RUN rm -rf /tmp/*