[Docker] 컨테이너에 vim 설치하기

# 컨테이너명 확인
docker ps -a

# 컨테이너 접속
docker exec -it [컨테이너명] /bin/bash

# Permission denied 발생
Reading package lists... Done
E: List directory /var/lib/apt/lists/partial is missing. 
- Acquire (13: Permission denied)

# 컨테이너 u0 재접속(권한 문제 해결)
docker exec -itu0 [컨테이너명] /bin/bash

apt-get update
apt-get upgrade
apt-get install vim