#!/bin/bash

# use the base of the current working directory as the new image name (e.g., "webimg:v1")
IMAGE_NAME=$(basename $(pwd)):v1

# creates an image "myweb:v1" by commiting a container.
# start with "./build.sh" in current directory

# create a random container name and use throuout this scrip
CNTR=$(date | md5sum | head -c 10)

echo "working with container name '$CNTR'"

if [ "$(docker ps -q -f name=$CNTR)" ]; then echo "container '$CNTR' exists, exiting"; exit 1; fi

# create nginx-container named web
docker run -it --rm -d -p 8080:80 --name $CNTR nginx

# copy static webpage into container
docker cp index.html $CNTR:/usr/share/nginx/html/

# commit running container to image
docker commit $CNTR $IMAGE_NAME

# stop container (which will also delete the container because of --rm )
docker stop $CNTR

# start new container from image myweb:v1 and expose port 80 to 8080 on host
docker run -it --rm -d -p 8080:80 --name $CNTR $IMAGE_NAME

# tell user what to do :)
echo "fire up browser and type 'http://$(hostname).simple.eee.intern:8080/' into address bar"
echo "you should see our webpage"
echo
read -n 1 -p "when done, press any key to stop (and remove) the webserver container."
echo
echo "stopping container $CNTR and cleaning up, hang on...."
docker stop $CNTR

echo "done. bye then"