&& chmod +x ninja \
&& mv ninja /usr/local/bin
-RUN git clone https://github.com/nanomsg/nng.git \
+RUN git clone --branch v1.1.1 https://github.com/nanomsg/nng.git \
&& cd nng \
- && git checkout v1.1.1 \
&& mkdir build \
&& cd build \
&& cmake -DBUILD_SHARED_LIBS=1 -G Ninja .. \