Update docker build

Docker build will now perform most actions of the dev-setup making it
possible to use caches in a greater extent speeding up the build

Jenkinsfile

@@ -28,7 +28,7 @@ pipeline {
             steps {
                 echo 'Building Test Docker Image'
                 sh 'cp test/Dockerfile.test Dockerfile'
-                sh 'docker build --no-cache --target voight_kampff -t mycroft-core:${BRANCH_ALIAS} .'
+                sh 'docker build --target voight_kampff -t mycroft-core:${BRANCH_ALIAS} .'
                 echo 'Running Tests'
                 timeout(time: 10, unit: 'MINUTES')
                 {

test/Dockerfile.test

@@ -1,40 +1,95 @@
+# Build an Ubuntu-based container to run Mycroft
+#
+#   The steps in this build are ordered from least likely to change to most
+#   likely to change.  The intent behind this is to reduce build time so things
+#   like Jenkins jobs don't spend a lot of time re-building things that did not
+#   change from one build to the next.
+#
 FROM ubuntu:18.04 as builder
 ENV TERM linux
 ENV DEBIAN_FRONTEND noninteractive
-COPY . /opt/mycroft/mycroft-core
+# Un-comment any package sources that include a multiverse
+RUN sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list
 # Install Server Dependencies for Mycroft
-RUN set -x \
-    # Un-comment any package sources that include a multiverse
-	&& sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list \
-	&& apt-get update \
-	# Install packages specific to Docker implementation
-    && apt-get -y install locales sudo\
-	&& mkdir /opt/mycroft/skills \
-	&& CI=true bash -x /opt/mycroft/mycroft-core/dev_setup.sh --allow-root -sm \
-	&& apt-get -y autoremove \
-	&& apt-get clean \
-	&& rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+RUN apt-get update && apt-get install -y \
+    autoconf \
+    automake \
+    bison \
+    build-essential \
+    curl \
+    flac \
+    git \
+    jq \
+    libfann-dev \
+    libffi-dev \
+    libicu-dev \
+    libjpeg-dev \
+    libglib2.0-dev \
+    libssl-dev \
+    libtool \
+    locales \
+    mpg123 \
+    pkg-config \
+    portaudio19-dev \
+    pulseaudio \
+    pulseaudio-utils \
+    python3 \
+    python3-dev \
+    python3-pip \
+    python3-setuptools \
+    python3-venv \
+    screen \
+    sudo \
+    swig \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
 # Set the locale
 RUN locale-gen en_US.UTF-8
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
-# Add the local configuration directory
-RUN mkdir ~/.mycroft
-VOLUME /root/.mycroft
+
+# Setup the virtual environment
+#   This may not be the most efficient way to do this in terms of number of
+#   steps, but it is built to take advantage of Docker's caching mechanism
+#   to only rebuild things that have changed since the last build.
+RUN mkdir /opt/mycroft
+RUN mkdir /var/log/mycroft
+WORKDIR /opt/mycroft
+RUN mkdir mycroft-core skills ~/.mycroft
+RUN python3 -m venv "/opt/mycroft/mycroft-core/.venv"
+RUN mycroft-core/.venv/bin/python -m pip install pip==20.0.2
+COPY requirements.txt mycroft-core
+RUN mycroft-core/.venv/bin/python -m pip install -r mycroft-core/requirements.txt
+COPY . mycroft-core
 EXPOSE 8181
 
+
 # Integration Test Suite
+#
+#   Build against this target to set the container up as an executable that
+#   will run the "voight_kampff" integration test suite.
+#
 FROM builder as voight_kampff
 # Add the mycroft core virtual environment to the system path.
 ENV PATH /opt/mycroft/mycroft-core/.venv/bin:$PATH
-WORKDIR /opt/mycroft/mycroft-core/test/integrationtests/voight_kampff
+# Install required packages for test environments
+RUN mycroft-core/.venv/bin/python -m pip install -r mycroft-core/test-requirements.txt
+RUN mycroft-core/.venv/bin/python -m pip install --no-deps /opt/mycroft/mycroft-core
+RUN mkdir ~/.mycroft/allure-result
+
 # Install Mark I default skills
 RUN msm -p mycroft_mark_1 default
+
 # The behave feature files for a skill are defined within the skill's
 # repository.  Copy those files into the local feature file directory
 # for test discovery.
-RUN python -m test.integrationtests.voight_kampff.test_setup -c default.yml
-RUN mkdir ~/.mycroft/allure-result
+WORKDIR /opt/mycroft/mycroft-core
+# Generate hash of required packages
+RUN md5sum requirements.txt test-requirements.txt dev_setup.sh > .installed
+RUN python -m test.integrationtests.voight_kampff.test_setup -c test/integrationtests/voight_kampff/default.yml
+
 # Setup and run the integration tests
+WORKDIR /opt/mycroft/mycroft-core/test/integrationtests/voight_kampff
 ENTRYPOINT "./run_test_suite.sh"