Add builder dockerfile.

Dockerfile.builder

@@ -0,0 +1,47 @@
+FROM ubuntu:bionic
+RUN apt-get update \
+  && DEBIAN_FRONTEND=noninteractive \
+  apt-get install -qy --no-install-recommends \
+  software-properties-common \
+  wget \
+  gpg-agent \
+  && wget -q https://apt.llvm.org/llvm-snapshot.gpg.key \
+  && apt-key add llvm-snapshot.gpg.key \
+  && add-apt-repository 'deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-7 main' \
+  && DEBIAN_FRONTEND=noninteractive \
+  apt-get install -qy --no-install-recommends \
+  software-properties-common \
+  cmake \
+  git \
+  audacious-dev \
+  libaudclient-dev \
+  libcairo2-dev \
+  libcurl4-openssl-dev \
+  libical-dev \
+  libimlib2-dev \
+  libircclient-dev \
+  libiw-dev \
+  liblua5.3-dev \
+  libmicrohttpd-dev \
+  libmysqlclient-dev \
+  libpulse-dev \
+  librsvg2-dev \
+  libsystemd-dev \
+  libxdamage-dev \
+  libxext-dev \
+  libxft-dev \
+  libxinerama-dev \
+  libxml2-dev \
+  libxmmsclient-dev \
+  libxnvctrl-dev \
+  ncurses-dev \
+  clang-7 \
+  lldb-7 \
+  lld-7 \
+  libc++-7-dev \
+  libc++abi-7-dev \
+  clang-tools-7 \
+  clang-format-7 \
+  clang-tidy-7 \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*