[GChange web] Forgot to make hook script executable

pica-gchange/client/Dockerfile

@@ -17,6 +17,8 @@ RUN mkdir /tmp/gchange_temp \
     && rm -r /tmp/gchange_temp
 
 COPY 50-change-gchangepod-url.sh /docker-entrypoint.d
+RUN chmod +x /docker-entrypoint.d/50-change-gchangepod-url.sh
+
 WORKDIR /usr/share/nginx/html
 
 # CMD, ENTRYPOINT etc are managed by base image