Merge pull request #1426 from General-Beck/patch-5

Update Ubuntu Dockerfile

docker/ubuntu/Dockerfile

@@ -1,12 +1,13 @@
 FROM ubuntu:14.04
-
+WORKDIR /build
 # install tools and dependencies
 RUN apt-get update && \
         apt-get install -y \
         g++ \
         curl \
         git \
-	make
+        file \
+        binutils
 
 # install rustup
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
@@ -17,7 +18,16 @@ ENV PATH /root/.cargo/bin:$PATH
 # show backtraces
 ENV RUST_BACKTRACE 1
 
+# show tools
+RUN rustc -vV && \
+cargo -V && \
+gcc -v &&\
+g++ -v
+
 # build parity
 RUN git clone https://github.com/ethcore/parity && \
         cd parity && \
-	cargo build --release
+        cargo build --release --verbose && \
+        ls /build/parity/target/release/parity &&       \
+        strip /build/parity/target/release/parity
+RUN file /build/parity/target/release/parity