Copy templates and public dirs to install dir

Dockerfile

@@ -17,7 +17,9 @@ RUN mkdir -p ${GOPATH}/src/github.com/gogits && \
     go get ./... && \
     go build && \
     go install && \
-    mv ${GOPATH}/bin/gogs /home/cloudron/gogs/
+    mv ${GOPATH}/bin/gogs /home/cloudron/gogs/ && \
+    cp -r ${GOPATH}/src/github.com/gogits/gogs/templates/ /home/cloudron/gogs/. && \
+    cp -r ${GOPATH}/src/github.com/gogits/gogs/public/ /home/cloudron/gogs/.
 
 ADD app.ini.template /home/cloudron/app.ini.template
 ADD start.sh /home/cloudron/start.sh