run_container.sh

#!/bin/bash
#
# shell script for run container or start&attach container easily
#
# Usage: ./run_container.sh
# create by c4fiber<qudcjf153@gmail.com>

CONTAINER_NAME=lets-practice-linux-cli
IMAGE_NAME=hayanbada/linux-cli-prac
VOLUME=linux-cli-prac_data

# create volume if it is not exist
docker volume inspect linux-cli-prac_data > /dev/null
if [ $? -eq 0 ]; then
	echo "volume: linux-cli-prac_data already exist"
else
	echo "create new volume: $VOLUME"
	docker volume create "$VOLUME" > /dev/null
fi

# Does container already exist?
EXISTING_CONTAINER=$(docker ps -a \
			--filter "name=^${CONTAINER_NAME}$" \
			--format "{{.Names}}")
if [ "$EXISTING_CONTAINER" = "$CONTAINER_NAME" ]; then
	echo "container: $CONTAINER_NAME already exists "
	docker start -ai "$CONTAINER_NAME"
else
	echo "create new container: $CONTAINER_NAME"
	docker run -it --name "$CONTAINER_NAME" \
		-v $VOLUME:/home/myuser "$IMAGE_NAME" /bin/bash
fi