updated docker containers

docker/ubuntu/Dockerfile

@@ -0,0 +1,31 @@
+FROM ubuntu:14.04
+
+# install tools and dependencies
+RUN apt-get update && \
+	apt-get install -y \
+	curl \
+	git \
+	# add-apt-repository
+	software-properties-common
+
+# rocksdb ppas. then update ppas
+RUN add-apt-repository "deb http://ppa.launchpad.net/giskou/librocksdb/ubuntu trusty main" && \
+	apt-get update && \
+	apt-get install -y --force-yes librocksdb
+
+# install multirust
+RUN curl -sf https://raw.githubusercontent.com/brson/multirust/master/blastoff.sh | sh -s -- --yes
+
+# install nightly and make it default
+RUN multirust update nightly && multirust default nightly
+
+# export rust LIBRARY_PATH
+ENV LIBRARY_PATH /usr/local/lib
+
+# show backtraces
+ENV RUST_BACKTRACE 1
+
+# build parity
+RUN git clone https://github.com/ethcore/parity && \
+	cd parity && \
+	cargo install --features rpc