docker-exec-bash

#!/bin/sh -eu

# docker-exec-bash: exec Bash in container
# Copyright (C) 2020  "Michael G. Morey" <mgmorey@gmail.com>

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

usage_error() {
    printf "$@" >&2
    exit 2
}

script=$(basename "$0")

if [ $# -lt 1 ]; then
    usage_error '%s: Not enough arguments\n' "$script"
elif [ $# -gt 1 ]; then
    usage_error '%s: Too many arguments\n' "$script"
fi

docker exec -it $1 bash