Show HN: PNGR – Docker-compose for a Postgres-Nginx-Golang-React stack

PNGR Stack

Dockerized (postgres + nginx + golang + react) starter kit

Only implements basic user signup, session management, and a toy post type to demonstrate basic CRUD. PNGR is not a CMS.

Features

• Hot-reload, front and back, including a test-runner for golang changes
• JSON Web-Token cookies with automatic refresh: ready for horizontal scaling
• Uses alpine images for small footprint
• Feature development is up to you!

Requirements

• Install docker && docker-compose

Quick Start

1. sudo docker-compose up
2. Visit https://localhost (note https)
3. Approve the self-signed cert
4. Make changes to either golang or react code, and enjoy hot-reload goodness!

Preview of the app:

Rebuilding your dev environment

Maybe your postgres went sideways from a wonky migration and you don't want to muck with fixing it.

sudo docker-compose down -v && sudo docker-compose up --build --force-recreate

Deploying to Production

Warning: Run in production at your own risk - this code is not security hardened!

Everyone's production deployment will look different, but some thoughts:

• P Consider running an actual postgres instance. Running a production database in docker makes me sweat.
• N Look at nginx/nginx.prod.conf for ideas on what a production configuration might look like.
• G Use golang/Dockerfile.prod
• R Use react/Dockerfile.prod
  • e.g. From project root you can run sudo docker build -t react-prod -f react/Dockerfile.prod react
  • Test it out with sudo docker run --net=host react-prod then hit http://localhost in your browser

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Postgres

Some tips for working with your postgres docker instance

Creating and running migrations

Migrations are run using go-migrate.

I put together little bash scripts to help you get stuff done.

• sudo postgres/new-migration.sh my_migration_name will create a template for the next migration.
• sudo postgres/run-migrations.sh will execute any new migrations

You can do more advanced migrate commands

Opening a psql client

sudo docker-compose exec postgres psql -U postgres Remember to use \q to exit.

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Nginx

Nginx is simply used to route requests to the front-end and back-end based on path. It also terminates SSL so that we don't have to deal with certs in our app layer.

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Golang

Almost-vanilla golang api:

• Makes use of go modules for dependencies
• jwt-gp for JSON Web Tokens
• sqlx for better postgres interface

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React

The basic building blocks of the front-end are:

from Hacker News https://github.com/karlkeefer/pngr