Docker Multistage сборка образа

Question

FROM ubuntu:14.04
MAINTAINER Someone

ENV DEBIAN_FRONTEND noninteractive

RUN apt-get update && apt-get install -y software-properties-common && 
rm -rf /var/lib/apt/lists/*
RUN add-apt-repository ppa:fkrull/deadsnakes # python3.5

RUN apt-get update && apt-get install -y \
    wget \
    ca-certificates \
    apparmor \
    aufs-tools \
    automake \
    cmake \
    bash-completion \
    build-essential \
    dpkg-sig \
    git \
    iptables \
    libapparmor-dev \
    libcap-dev \
    libsqlite3-dev \
    mercurial \
    parallel \
    python-mock \
    python-pip \
    python-websocket \
    mesa-utils \
    libgl1-mesa-dev libx11-dev libxt-dev \
    libeigen3-dev libflann1.8 libflann-dev libboost-all-dev libqhull* 
    libgtest-dev freeglut3-dev \
    libcurl4-openssl-dev libarchive-dev libwxgtk2.8-* libwxgtk3.0-* ccache \
   --no-install-recommends \
   && rm -rf /var/lib/apt/lists/*

RUN sudo update-alternatives --install /usr/bin/clang clang 
/usr/bin/clang-3.6 100
RUN sudo update-alternatives --install /usr/bin/clang++ clang++ 
/usr/bin/clang++-3.6 100

# install Tcl
WORKDIR /tmp
RUN wget http://prdownloads.sourceforge.net/tcl/tcl8.6.6-src.tar.gz \
  && tar -zxvf tcl8.6.6-src.tar.gz \
  && cd tcl8.6.6/unix && ./configure && make -j$(nproc) && sudo make 
install \
  && rm /tmp/tcl8.6.6-src.tar.gz

# install Tk
WORKDIR /tmp
RUN wget http://prdownloads.sourceforge.net/tcl/tk8.6.6-src.tar.gz \
    && tar -zxvf tk8.6.6-src.tar.gz \
    && cd tk8.6.6/unix && ./configure && make -j$(nproc) && sudo make 
install \
   && rm /tmp/tk8.6.6-src.tar.gz

# install vtk 7 for python3
WORKDIR /tmp
RUN wget http://www.vtk.org/files/release/7.0/VTK-7.0.0.tar.gz \
  && tar -zxvf VTK-7.0.0.tar.gz \
  && mkdir /vtk-build2 \
  && cd /vtk-build2 \
  && cmake \
  -DCMAKE_BUILD_TYPE:STRING=Release \
  -DBUILD_TESTING:BOOL=OFF \
  -DVTK_WRAP_PYTHON:BOOL=ON \
  -DVTK_WRAP_PYTHON_SIP:BOOL=ON \
  -DVTK_WRAP_TCL:BOOL=ON \
  -DVTK_PYTHON_VERSION:STRING=3.5 \
  -DVTK_USE_TK:BOOL=ON \
  /tmp/VTK-7.0.0 \
  && make -j$(nproc) \
  && cd Wrapping/Python && make -j$(nproc) && sudo make install \
  && rm /tmp/VTK-7.0.0.tar.gz

ENV LD_LIBRARY_PATH $LD_LIBRARY_PATH:/usr/local/lib:/vtk-build2/lib
# ---- end of vtk installation process

# install 1.8 pcl from source
WORKDIR /tmp
RUN git clone --depth=1 --branch=roofkit 
https://github.com/pbrazdil/pcl.git \
   && mkdir pcl/build \
   && cd /tmp/pcl/build \
   && cmake -DCMAKE_BUILD_TYPE=Release .. \
   && make -j$(nproc) \
   && sudo make -j$(nproc) install

# Install Python 3.5
RUN apt-get update && apt-get install -y --force-yes python3.5 
python3.5-dev python3-pip python3.5-tk+ && rm -rf /var/lib/apt/lists/*
RUN python3.5 -m pip install --upgrade pip

# Install Swift
WORKDIR /swift
RUN wget -nv https://swift.org/builds/swift-4.1.2- 
release/ubuntu1404/swift-4.1.2-RELEASE/swift-4.1.2-RELEASE- 
ubuntu14.04.tar.gz \ 
  && tar xzf swift-4.1.2-RELEASE-ubuntu14.04.tar.gz && rm swift-4.1.2- 
RELEASE-ubuntu14.04.tar.gz

ENV PATH /swift/swift-4.1.2-RELEASE-ubuntu14.04/usr/bin:$PATH


# Install unzip for unzipping Weather files
RUN apt-get update && apt-get install unzip && rm -rf 
/var/lib/apt/lists/*

У меня есть этот Dockerfile. Когда я создаю этот Dockerfile, требуется сделать изображение огромного размера. Я хочу уменьшить размер этого файла Dockerfile. Поэтому я добавляю два этапа:- для Python и Swift. Есть ли у вас какие-либо предложения, чтобы сделать это лучше. Большое спасибо за уделенное время.

# Install Python 3.6
FROM python:3.6 AS base
WORKDIR /tmp
FROM base AS dependencies
RUN pip install -r requirements.txt
FROM dependencies AS build
WORKDIR /tmp
COPY . /app
FROM python:3.6-alpine3.7 AS release
WORKDIR /tmp
COPY --from=dependencies /app/requirements.txt ./
COPY --from=dependencies /root/.cache /root/.cache
RUN pip install -r requirements.txt
COPY --from=build /tmp/ ./

# Install Swift
FROM swift:latest as build-swift
RUN mkdir -p /build/lib && cp -R /usr/lib/swift/linux/*.so /build/lib
FROM ubuntu:14.04
COPY --from=build-swift /build/lib/* /usr/lib/
RUN apt-get -q update && \
   apt-get -q install -y --no-install-recommends \
   libatomic1 \
   libbsd0 \
   libcurl3 \
   libicu55 \
   libxml2 \
   && rm -r /var/lib/apt/lists/*

ENV PATH /swift/build-swift/usr/bin:$PATH

Вышеупомянутый раздел для python и быстрого процесса сборки multitage.