add rocksdb requirement, update dockerfile

docker/Dockerfile.wallet_server

@@ -10,6 +10,9 @@ ENV DOCKER_TAG=$DOCKER_TAG DOCKER_COMMIT=$DOCKER_COMMIT
 
 RUN apt-get update && \
     apt-get -y --no-install-recommends install \
+      liblz4-dev \
+      libsnappy-dev \
+      librocksdb-dev \
       wget \
       tar unzip \
       build-essential \

setup.py

@@ -10,6 +10,8 @@ with open(os.path.join(BASE, 'README.md'), encoding='utf-8') as fh:
 PLYVEL = []
 if sys.platform.startswith('linux'):
     PLYVEL.append('plyvel==1.0.5')
+    PLYVEL.append('python-rocksdb')
+
 
 setup(
     name=__name__,