create-docker-container-on-git-push

#!/usr/bin/env bash

export APP=appname
export DOCKER_OPTS=""
unset GIT_DIR

rm -rf /home/username/apps/$APP
cd /home/username/apps && \
git clone /home/username/git/$APP && \
cd $APP && \
echo building image && \
docker build -t $APP .
if [[ "$?" != "0" ]]; then
  echo "error while building image."
  exit 1
fi

echo "Stopping previous container..."
docker stop $APP

echo "Starting new container..."
sleep 1
docker run -d --name $APP --rm $APP

# Source: https://news.ycombinator.com/item?id=23465591