Docker bash prompt does not display color output

Question

I use command: docker run --rm -it govim bash -l to run docker images but it does not display color output. If I source ~/.bash_profile or run

Answer 1

Adding to VonC's answer, I made this bash function:

drun() { # start container with the specified entrypoint and colour terminal
    if [[ $# -lt 2 ]]; then
        echo "drun needs 2+ arguments: image entrypoint" >&2
        return
    fi
    docker run -ti -e "TERM=xterm-256color" "$@"
}