diff --git a/Dockerfile.in b/Dockerfile.in
index 9c723f4..09d22a4 100644
--- a/Dockerfile.in
+++ b/Dockerfile.in
@@ -1,36 +1,36 @@
 FROM debian:jessie
 MAINTAINER Matt McCormick "matt.mccormick@kitware.com"
 
-RUN apt-get update && apt-get install -y curl && \\
+RUN apt-get update && apt-get install -y curl && \
   sed -i "s/httpredir.debian.org/`curl -s -D - http://httpredir.debian.org/demo/debian/ | awk '/^Link:/ { print $2 }' | sed -e 's@<http://\(.*\)/debian/>;@\1@g'`/" /etc/apt/sources.list
 
-RUN apt-get update && apt-get -y install \\
-  automake \\
-  autogen \\
-  bash \\
-  build-essential \\
-  bzip2 \\
-  ca-certificates \\
-  curl \\
-  file \\
-  git \\
-  gzip \\
-  libcurl4-openssl-dev \\
-  libssl-dev \\
-  make \\
-  ncurses-dev \\
-  pkg-config \\
-  libtool \\
-  python \\
-  rsync \\
-  sed \\
-  bison \\
-  flex \\
-  tar \\
-  vim \\
-  wget \\
-  runit \\
-  xz-utils && \\
+RUN apt-get update && apt-get -y install \
+  automake \
+  autogen \
+  bash \
+  build-essential \
+  bzip2 \
+  ca-certificates \
+  curl \
+  file \
+  git \
+  gzip \
+  libcurl4-openssl-dev \
+  libssl-dev \
+  make \
+  ncurses-dev \
+  pkg-config \
+  libtool \
+  python \
+  rsync \
+  sed \
+  bison \
+  flex \
+  tar \
+  vim \
+  wget \
+  runit \
+  xz-utils && \
   apt-get -y clean
 
 #include "common.docker"
diff --git a/Makefile b/Makefile
index 6a6e27a..df74c77 100644
--- a/Makefile
+++ b/Makefile
@@ -72,7 +72,7 @@ linux-ppc64le.test: linux-ppc64le test/run.py
 	$(BIN)/dockcross-linux-ppc64le python test/run.py --languages C
 
 manylinux-x64/Dockerfile: manylinux-x64/Dockerfile.in common.docker
-	cpp -o manylinux-x64/Dockerfile -I$(shell pwd) manylinux-x64/Dockerfile.in
+	sed '/common.docker/ r common.docker' manylinux-x64/Dockerfile.in > manylinux-x64/Dockerfile
 
 manylinux-x64: manylinux-x64/Dockerfile
 	$(DOCKER) build -t $(ORG)/manylinux-x64 -f manylinux-x64/Dockerfile .
@@ -96,7 +96,7 @@ windows-x64.test: windows-x64 test/run.py
 	$(BIN)/dockcross-windows-x64 python test/run.py --exe-suffix ".exe"
 
 Dockerfile: Dockerfile.in common.docker
-	cpp -o Dockerfile Dockerfile.in
+	sed '/common.docker/ r common.docker' Dockerfile.in > Dockerfile
 
 base: Dockerfile
 	$(DOCKER) build -t $(ORG)/base .
diff --git a/common.docker b/common.docker
index 1e49aa9..031e6d2 100644
--- a/common.docker
+++ b/common.docker
@@ -1,35 +1,31 @@
-#ifdef linux
-#undef linux
-#endif
-
 WORKDIR /usr/share
-RUN git clone "https://github.com/nojhan/liquidprompt.git" && \\
-  cd liquidprompt && \\
+RUN git clone "https://github.com/nojhan/liquidprompt.git" && \
+  cd liquidprompt && \
   git checkout v_1.11
 COPY imagefiles/.bashrc /root/
 
 WORKDIR /usr/src
-RUN git clone "git://cmake.org/cmake.git" CMake && \\
-   cd CMake && \\
-   git checkout v3.6.1 && \\
-   cd .. && mkdir CMake-build && cd CMake-build && \\
-   /usr/src/CMake/bootstrap \\
-     --parallel=$(nproc) \\
-     --prefix=/usr && \\
-   make -j$(nproc) && \\
-   ./bin/cmake \\
-     -DCMAKE_BUILD_TYPE:STRING=Release \\
-     -DCMAKE_USE_OPENSSL:BOOL=ON . && \\
-   make install && \\
-   cd .. && \\
+RUN git clone "git://cmake.org/cmake.git" CMake && \
+   cd CMake && \
+   git checkout v3.6.1 && \
+   cd .. && mkdir CMake-build && cd CMake-build && \
+   /usr/src/CMake/bootstrap \
+     --parallel=$(nproc) \
+     --prefix=/usr && \
+   make -j$(nproc) && \
+   ./bin/cmake \
+     -DCMAKE_BUILD_TYPE:STRING=Release \
+     -DCMAKE_USE_OPENSSL:BOOL=ON . && \
+   make install && \
+   cd .. && \
    rm -rf CMake*
 
-RUN git clone "https://github.com/martine/ninja.git" && \\
-   cd ninja && \\
-   git checkout v1.7.1 && \\
-   ([ -e /opt/python/cp35-cp35m/bin/python ] && /opt/python/cp35-cp35m/bin/python ./configure.py --bootstrap) || python ./configure.py --bootstrap && \\
-   ./ninja && \\
-   cp ./ninja /usr/bin/ && \\
+RUN git clone "https://github.com/martine/ninja.git" && \
+   cd ninja && \
+   git checkout v1.7.1 && \
+   ([ -e /opt/python/cp35-cp35m/bin/python ] && /opt/python/cp35-cp35m/bin/python ./configure.py --bootstrap) || python ./configure.py --bootstrap && \
+   ./ninja && \
+   cp ./ninja /usr/bin/ && \
    cd .. && rm -rf ninja
 COPY imagefiles/cmake.sh /usr/local/bin/cmake
 COPY imagefiles/ccmake.sh /usr/local/bin/ccmake
diff --git a/manylinux-x64/Dockerfile.in b/manylinux-x64/Dockerfile.in
index 55c3c1a..b7254fa 100644
--- a/manylinux-x64/Dockerfile.in
+++ b/manylinux-x64/Dockerfile.in
@@ -3,10 +3,10 @@ MAINTAINER Matt McCormick "matt.mccormick@kitware.com"
 
 #include "common.docker"
 
-RUN cd /opt && \\
-  wget "http://smarden.org/runit/runit-2.1.2.tar.gz" && \\
-  tar xvzf runit-2.1.2.tar.gz && \\
-  cd admin/runit-2.1.2 && \\
+RUN cd /opt && \
+  wget "http://smarden.org/runit/runit-2.1.2.tar.gz" && \
+  tar xvzf runit-2.1.2.tar.gz && \
+  cd admin/runit-2.1.2 && \
   ./package/install
 
 COPY manylinux-x64/install-skbuild.sh /usr/local/bin
@@ -14,11 +14,11 @@ RUN /usr/local/bin/install-skbuild.sh
 
 ENV CROSS_TRIPLE x86_64-linux-gnu
 ENV CROSS_ROOT /opt/rh/devtoolset-2/root/usr/bin
-ENV AS=${CROSS_ROOT}/as \\
-    AR=${CROSS_ROOT}/ar \\
-    CC=${CROSS_ROOT}/gcc \\
-    CPP=${CROSS_ROOT}/cpp \\
-    CXX=${CROSS_ROOT}/g++ \\
+ENV AS=${CROSS_ROOT}/as \
+    AR=${CROSS_ROOT}/ar \
+    CC=${CROSS_ROOT}/gcc \
+    CPP=${CROSS_ROOT}/cpp \
+    CXX=${CROSS_ROOT}/g++ \
     LD=${CROSS_ROOT}/ld
 
 COPY linux-x64/${CROSS_TRIPLE}-noop.sh /usr/bin/${CROSS_TRIPLE}-noop