Remove build dirs from docker image to keep the layers small (#5243)

* Remove build dirs from docker image to keep the layers small

* Create setup_docker_prereqs script to prepare docker env

* Add documentation for required packages, drop colorlog and cython in first step of Dockerfile since it will be installed later on anyway. Drop libglib2.0-dev and libbluetooth-dev

* Also remove early install of colorlog and cython in Dockerfile.dev

* Re-add libglib2.0-dev and libbluetooth-dev for Bluetooth LE

Dockerfile

@@ -6,24 +6,11 @@ VOLUME /config
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 
-RUN pip3 install --no-cache-dir colorlog cython
-
-# For the nmap tracker, bluetooth tracker, Z-Wave, tellstick
-RUN echo "deb http://download.telldus.com/debian/ stable main" >> /etc/apt/sources.list.d/telldus.list && \
-    wget -qO - http://download.telldus.se/debian/telldus-public.key | apt-key add - && \
-    apt-get update && \
-    apt-get install -y --no-install-recommends nmap net-tools cython3 libudev-dev sudo libglib2.0-dev bluetooth libbluetooth-dev \
-            libtelldus-core2 cmake libxrandr-dev swig && \
-    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-COPY script/build_python_openzwave script/build_python_openzwave
-RUN script/build_python_openzwave && \
-  mkdir -p /usr/local/share/python-openzwave && \
-  ln -sf /usr/src/app/build/python-openzwave/openzwave/config /usr/local/share/python-openzwave/config
-
-COPY script/build_libcec script/build_libcec
-RUN script/build_libcec
+# Copy build scripts
+COPY script/setup_docker_prereqs script/build_python_openzwave script/build_libcec script/
+RUN script/setup_docker_prereqs
 
+# Install hass component dependencies
 COPY requirements_all.txt requirements_all.txt
 RUN pip3 install --no-cache-dir -r requirements_all.txt && \
     pip3 install --no-cache-dir mysqlclient psycopg2 uvloop

script/build_libcec

@@ -1,7 +1,7 @@
 #!/bin/sh
 # Sets up and builds libcec to be used with Home Assistant.
 # Dependencies that need to be installed:
-# apt-get install cmake libudev-dev libxrandr-dev python-dev swig
+# apt-get install cmake libudev-dev libxrandr-dev swig
 
 # Stop on errors
 set -e

script/setup_docker_prereqs

@@ -0,0 +1,50 @@
+#!/bin/bash
+# Install requirements and build dependencies for Home Assinstant in Docker.
+
+# Required debian packages for running hass or components
+PACKAGES=(
+  # homeassistant.components.device_tracker.nmap_tracker
+  nmap net-tools
+  # homeassistant.components.device_tracker.bluetooth_tracker
+  bluetooth libglib2.0-dev libbluetooth-dev
+  # homeassistant.components.tellstick
+  libtelldus-core2
+)
+
+# Required debian packages for building dependencies
+PACKAGES_DEV=(
+  # python-openzwave
+  cython3 libudev-dev
+  # libcec
+  cmake swig libxrandr-dev
+)
+
+# Stop on errors
+set -e
+
+cd "$(dirname "$0")/.."
+
+# Add Tellstick repository
+echo "deb http://download.telldus.com/debian/ stable main" >> /etc/apt/sources.list.d/telldus.list
+wget -qO - http://download.telldus.se/debian/telldus-public.key | apt-key add -
+
+# Install packages
+apt-get update
+apt-get install -y --no-install-recommends ${PACKAGES[@]} ${PACKAGES_DEV[@]}
+
+# Build and install openzwave
+script/build_python_openzwave
+mkdir -p /usr/local/share/python-openzwave
+ln -sf /usr/src/app/build/python-openzwave/openzwave/config /usr/local/share/python-openzwave/config
+
+# Build and install libcec
+script/build_libcec
+
+# Remove packages
+apt-get remove -y --purge ${PACKAGES_DEV[@]}
+apt-get -y --purge autoremove
+
+# Cleanup
+apt-get clean
+rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* build/
+

virtualization/Docker/Dockerfile.dev

@@ -10,24 +10,11 @@ VOLUME /config
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 
-RUN pip3 install --no-cache-dir colorlog cython
-
-# For the nmap tracker, bluetooth tracker, Z-Wave, tellstick
-RUN echo "deb http://download.telldus.com/debian/ stable main" >> /etc/apt/sources.list.d/telldus.list && \
-    wget -qO - http://download.telldus.se/debian/telldus-public.key | apt-key add - && \
-    apt-get update && \
-    apt-get install -y --no-install-recommends nmap net-tools cython3 libudev-dev sudo libglib2.0-dev bluetooth libbluetooth-dev \
-            libtelldus-core2 cmake libxrandr-dev swig && \
-    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-COPY script/build_python_openzwave script/build_python_openzwave
-RUN script/build_python_openzwave && \
-  mkdir -p /usr/local/share/python-openzwave && \
-  ln -sf /usr/src/app/build/python-openzwave/openzwave/config /usr/local/share/python-openzwave/config
-
-COPY script/build_libcec script/build_libcec
-RUN script/build_libcec
+# Copy build scripts
+COPY script/setup_docker_prereqs script/build_python_openzwave script/build_libcec script/
+RUN script/setup_docker_prereqs
 
+# Install hass component dependencies
 COPY requirements_all.txt requirements_all.txt
 RUN pip3 install --no-cache-dir -r requirements_all.txt && \
     pip3 install --no-cache-dir mysqlclient psycopg2 uvloop
@@ -42,13 +29,10 @@ RUN curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash - && \
 RUN pip3 install --no-cache-dir tox
 
 # Copy over everything required to run tox
-COPY requirements_test.txt .
-COPY setup.cfg .
-COPY setup.py .
-COPY tox.ini .
+COPY requirements_test.txt setup.cfg setup.py tox.ini ./
 COPY homeassistant/const.py homeassistant/const.py
 
-# Get all dependencies
+# Prefetch dependencies for tox
 RUN tox -e py35 --notest
 
 # END: Development additions