Dockerfile no more master.zip from GitHub

It seems Docker Hub builds somehow cache the master.zip from GitHub and don't update. Not really sure, but the Dockerfile is changed from wget master.zip to git shallow clone to see if it helps.

Dockerfile

@@ -43,19 +43,17 @@ COPY docker/60docker.conf /etc/gateone/conf.d/60docker.conf
 
 #made transactional to clear up after compiling
 RUN apk add --update --no-cache g++ linux-headers \
-             openssh-client openssl && \
+             openssh-client openssl git && \
     pip install -r /tmp/requirements.txt && \
     cd /gateone && \
-    wget https://github.com/xykonur/GateOne/archive/master.zip && \
-    unzip master.zip && \
-    rm -f master.zip && \
+    git clone --depth=1 https://github.com/xykonur/gateone.git GateOne-master && \
     cd GateOne-master && \
     python setup.py install && \
     /usr/local/bin/gateone --configure \
        --log_file_prefix="/gateone/logs/gateone.log" && \
     cd /etc/gateone/ssl && \
     rm -f key.pem certificate.pem && \
-    apk del g++ linux-headers && \
+    apk del g++ linux-headers git && \
     rm -rf /gateone/GateOne-master
 
 EXPOSE 8000