Add Dockerfiles for images used on CI

.dev/docker/doc/Dockerfile

@@ -0,0 +1,13 @@
+FROM pointcloudlibrary/env:19.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update \
+ && apt-get install -y \
+      doxygen-latex \
+      dvipng \
+      git \
+      python3-pip \
+ && rm -rf /var/lib/apt/lists/*
+
+RUN pip3 install Jinja2==2.8.1 sphinx sphinxcontrib-doxylink

.dev/docker/env/Dockerfile

@@ -0,0 +1,42 @@
+ARG UBUNTU_DISTRO=16.04
+FROM ubuntu:${UBUNTU_DISTRO}
+
+ARG VTK_VERSION=6
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update \
+ && apt-get install -y \
+      cmake \
+      g++ \
+      wget \
+      libboost-date-time-dev \
+      libboost-filesystem-dev \
+      libboost-iostreams-dev \
+      libeigen3-dev \
+      libflann-dev \
+      libglew-dev \
+      libgtest-dev \
+      libopenni-dev \
+      libopenni2-dev \
+      libproj-dev \
+      libqhull-dev \
+      libqt5opengl5-dev \
+      libusb-1.0-0-dev \
+      libvtk${VTK_VERSION}-dev \
+      libvtk${VTK_VERSION}-qt-dev \
+      qtbase5-dev \
+ && rm -rf /var/lib/apt/lists/*
+
+RUN wget -qO- https://github.com/IntelRealSense/librealsense/archive/v2.23.0.tar.gz | tar xz \
+ && cd librealsense-2.23.0 \
+ && mkdir build \
+ && cd build \
+ && cmake .. -DBUILD_EXAMPLES=OFF -DBUILD_GRAPHICAL_EXAMPLES=OFF \
+ && make -j2 \
+ && make install \
+ && cd ../.. \
+ && rm -rf librealsense-2.23.0
+
+RUN wget -qO ensenso.deb https://download.ensenso.com/s/ensensosdk/download?files=ensenso-sdk-2.2.160-x64.deb \
+ && dpkg -i ensenso.deb \
+ && rm ensenso.deb

.dev/docker/fmt/Dockerfile

@@ -0,0 +1,11 @@
+FROM ubuntu:19.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+ARG CLANG_FORMAT_VERSION=8
+
+RUN apt-get update \
+ && apt-get install -y \
+      clang-format-${CLANG_FORMAT_VERSION} \
+      bash \
+      git \
+ && rm -rf /var/lib/apt/lists/*