docker: Add Dockerfile

An "all services" Dockerfile has been added. To build:

   # docker build -t commissaire-services .

Dockerfile

@@ -0,0 +1,28 @@
+FROM fedora:25
+MAINTAINER Red Hat, Inc. <container-tools@redhat.com>
+
+# Install required dependencies and commissaire services
+RUN dnf -y update && \
+dnf -y install --setopt=tsflags=nodocs openssh-clients redhat-rpm-config python3-pip python3-virtualenv git gcc libffi-devel openssl-devel && \
+git clone https://github.com/projectatomic/commissaire-service.git && \
+virtualenv-3 /environment && \
+. /environment/bin/activate && \
+cd commissaire-service && \
+pip install -U pip && \
+pip install -r requirements.txt && \
+pip install . && \
+cd .. && \
+pip freeze > /installed-python-deps.txt && \
+dnf remove -y gcc git redhat-rpm-config libffi-devel && \
+dnf clean all
+
+# Copy the all-in-one start script
+COPY tools/startup-services.sh /commissaire/
+
+# Configuration directory. Use --volume=/path/to/your/configs:/etc/commissaire
+VOLUME /etc/commissaire/
+
+# Run everything from /commissaire
+WORKDIR /commissaire
+# Execute the all-in-one-script
+CMD /commissaire/startup-services.sh