How to edit file after I shell to a docker container

Question

I successfully shelled to a docker container using

docker exec -i -t 69f1711a205e bash

Now I need to edit file and I don't have any editors inside

root@69f1711a205e:/# nano
bash: nano: command not found
root@69f1711a205e:/# pico
bash: pico: command not found
root@69f1711a205e:/# vi
bash: vi: command not found
root@69f1711a205e:/# vim
bash: vim: command not found
root@69f1711a205e:/# emacs
bash: emacs: command not found
root@69f1711a205e:/#

How to edit files?

Comments

If not found, install them

Answer 1

$EDITOR env variable is empty. You can login into container with:

docker exec -it <container> bash

and run:

apt-get update
apt-get install vim

Answer 2

You can even install it using a Dockerfile:

FROM  confluent/postgres-bw:0.1
RUN ["apt-get", "update"]
RUN ["apt-get", "install", "-y", "vim"]