fix: docker: io: xterm-256color

Author: coderaiser

docker/Dockerfile.io

@@ -59,6 +59,7 @@ ENV LANGUAGE=en_US:en
 ENV LC_ALL=en_US.UTF-8
 
 ENV PS1="\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ "
+ENV TERM=xterm-256color
 
 EXPOSE 8000