Update Dockerfile to use new install_rally.sh

This delegates more of the magic to the install script, and also has
some improvements to the Dockerfile and the related documentation.

Closes-Bug: #1461894
Change-Id: I86c0e439b8d0d8f40197fb4a8e26b2655036949c

.dockerignore

@@ -0,0 +1,6 @@
+rally-jobs
+tests
+Dockerfile
+contrib
+test-requirements.txt
+tox.ini

Dockerfile

@@ -1,27 +1,50 @@
 FROM ubuntu:14.04
 MAINTAINER Sergey Skripnick <sskripnick@mirantis.com>
-COPY . /tmp/rally
-RUN apt-get update && \
-    apt-get -y install git python2.7 bash-completion python-dev libffi-dev \
-                       libxml2-dev libxslt1-dev libssl-dev libpq-dev wget \
-                       build-essential &&\
-    wget https://raw.github.com/pypa/pip/master/contrib/get-pip.py -O /tmp/pip.py &&\
-    python /tmp/pip.py && rm /tmp/pip.py &&\
-    cd /tmp/rally &&\
-    ./install_rally.sh &&\
-    pip install -r optional-requirements.txt &&\
-    sed 's|#*connection *=.*|connection = sqlite:////home/rally/.rally.sqlite|' -i /etc/rally/rally.conf &&\
-    apt-get -y remove libssl-dev libffi-dev python-dev libxml2-dev \
-                      libxslt1-dev build-essential gcc-4.8 python3 && \
-    apt-get -y autoremove &&\
-    apt-get clean &&\
-    mv doc /usr/share/doc/rally &&\
-    rm -fr /tmp/* &&\
-    rm -rf /var/lib/apt/lists/* &&\
-    update-alternatives --install /usr/bin/python python /usr/bin/python2.7 10 &&\
-    useradd -u 65500 -m rally &&\
+
+# install prereqs
+RUN apt-get update && apt-get install --yes wget python
+
+# ubuntu's pip is too old to work with the version of requests we
+# require, so get pip with get-pip.py
+RUN wget https://bootstrap.pypa.io/get-pip.py && \
+  python get-pip.py && \
+  rm -f get-pip.py
+
+# create rally user
+RUN useradd -u 65500 -m rally && \
   ln -s /usr/share/doc/rally /home/rally/rally-docs
-USER rally
-CMD bash --login
-ENV HOME /home/rally
+
+# install rally. the COPY command below frequently invalidates
+# subsequent cache
+COPY . /tmp/rally
+WORKDIR /tmp/rally
+RUN ./install_rally.sh --system --verbose --yes \
+    --db-name /home/rally/.rally.sqlite && \
+  pip install -r optional-requirements.txt && \
+  chmod -R u=rwX,go=rX /etc/rally && \
+  mv doc /usr/share/doc/rally && \
+  mv samples ~/ && \
+  rm -rf /tmp/* && \
+  apt-get -y remove \
+    build-essential \
+    gcc-4.8 \
+    libffi-dev \
+    libssl-dev \
+    libxml2-dev \
+    libxslt1-dev \
+    python-dev \
+    python3 \
+  && \
+  apt-get -y autoremove && \
+  apt-get clean
+
+VOLUME ["/home/rally"]
+
 WORKDIR /home/rally
+USER rally
+ENV HOME /home/rally
+CMD ["bash", "--login"]
+
+# TODO(stpierre): Find a way to use `rally` as the
+# entrypoint. Currently this is complicated by the need to run
+# rally-manage to create the database.