Resolve #20 for now

Eventually I'd like proper Docker infrastructure, but this is a good
enough starting point just to demonstrate a proper development environment

Docker/Dockerfile

+FROM base/archlinux:latest
+MAINTAINER Nathan Hourt <nat.hourt@gmail.com>
+
+RUN pacman --noconfirm --needed -Syu clang ninja cmake git autoconf automake make m4 binutils pkg-config libtool fakeroot boost
+RUN mkdir /work
+WORKDIR /work
+COPY * /work/
+RUN bash ./bootstrap.sh

Docker/PKGBUILD

+# Maintainer: Nathan Hourt <nat.hourt@gmail.com>
+
+pkgname=libsecp256k1-zkp-cnx
+pkgver=20150529
+pkgrel=1
+pkgdesc="Optimized C library for EC operations on curve secp256k1 (Cryptonomex fork)"
+arch=('i686' 'x86_64')
+url="https://github.com/cryptonomex/secp256k1-zkp"
+makedepends=('autoconf' 'automake' 'libtool' 'git' 'm4' 'make' 'pkg-config')
+license=('MIT')
+source=(${pkgname%-git}::git+https://github.com/cryptonomex/secp256k1-zkp)
+sha256sums=('SKIP')
+provides=('libsecp256k1' 'secp256k1')
+conflicts=('libsecp256k1' 'secp256k1')
+
+pkgver() {
+  cd ${pkgname%-git}
+  git log -1 --format="%cd" --date=short | sed "s|-||g"
+}
+
+build() {
+  cd ${pkgname%-git}
+
+  msg2 'Building...'
+  ./autogen.sh
+  ./configure \
+    --prefix=/usr \
+    --sbindir=/usr/bin \
+    --libexecdir=/usr/lib/libsecp256k1 \
+    --sysconfdir=/etc \
+    --sharedstatedir=/usr/share/libsecp256k1 \
+    --localstatedir=/var/lib/libsecp256k1 \
+    --disable-tests \
+    --with-gnu-ld
+  make
+}
+
+package() {
+  cd ${pkgname%-git}
+
+  msg2 'Installing license...'
+  install -Dm 644 COPYING -t "$pkgdir/usr/share/licenses/libsecp256k1"
+
+  msg2 'Installing documentation'
+  install -Dm 644 README.md -t "$pkgdir/usr/share/doc/libsecp256k1"
+
+  msg2 'Installing...'
+  make DESTDIR="$pkgdir" install
+
+  msg2 'Cleaning up pkgdir...'
+  find "$pkgdir" -type d -name .git -exec rm -r '{}' +
+  find "$pkgdir" -type f -name .gitignore -exec rm -r '{}' +
+}

Docker/README.md

+## Example Dockerfile
+
+This is an example Dockerfile, which demonstrates how to build Eos successfully. At present, it is not intended for any other purposes than documentation.

Docker/bootstrap.sh

+mkdir -m 777 secp
+mv PKGBUILD secp
+cd secp
+su -s /bin/bash -c makepkg nobody
+pacman --noconfirm -U libsecp256k1-zkp-cnx-20150529-1-x86_64.pkg.tar.xz
+cd ..
+rm -rf secp Dockerfile README.md bootstrap.sh
+git clone https://github.com/eosio/eos --recursive
+cd eos
+cmake -G Ninja -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang .
+ninja