jwilder/nginx-proxy - Check if Docker network and container exist

gistfile1.txt

#!/bin/bash
##########################################################################
# script to check if the jwilder proxy container is already running
# and if the ngnix-proxy network exists
# run before "docker-compose up -d" if you use nginx-proxy for several projects
# see https://github.com/docker/compose/issues/2075
##########################################################################

if [ ! "$(docker network ls | grep nginx-proxy)" ]; then
  echo "Creating nginx-proxy network ..."
  docker network create nginx-proxy
else
  echo "nginx-proxy network exists."
fi

if [ ! "$(docker ps | grep nginx-proxy)" ]; then
    if [ "$(docker ps -aq -f name=nginx-proxy)" ]; then
        # cleanup
        echo "Cleaning Nginx Proxy ..."
        docker rm nginx-proxy
    fi
    # run your container in our global network shared by different projects
    echo "Running Nginx Proxy in global nginx-proxy network ..."
    docker run -d --name nginx-proxy -p 80:80 --network=nginx-proxy -v /var/run/docker.sock:/tmp/docker.sock:ro jwilder/nginx-proxy
else
  echo "Nginx Proxy already running."
fi

one-liner for the network - ensuring the network is created:

docker network ls | grep nginx-proxy || docker network create  nginx-proxy

docker network ls | grep nginx-proxy || docker network create  nginx-proxy

Grep might be too broad. Check this:

docker network inspect nginx-proxy &>/dev/null || \
    docker network create nginx-proxy