Update Dockerfile

Author: dclong

Dockerfile

@@ -20,7 +20,7 @@ RUN apt-get update -y \
         git openssh-client \
         rsync curl \
     && curl -sSL https://raw.githubusercontent.com/legendu-net/icon/main/install_icon.sh | bash \
-    && icon neovim -iy \
+    && icon neovim -iy && export EDITOR=nvim \
     && echo "Set disable_coredump false" >> /etc/sudo.conf \
     && /scripts/sys/purge_cache.sh