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Set the base image to Ubuntu must be first instruction - use docker search to find images

FROM ubuntu # <image>
FROM ubuntu:latest # - <image>:<tag>
FROM ubuntu:precise (LTS)

Set the maintainer info

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Docker Commands, Help & Tips

Show commands & management commands

$ docker

Docker version info

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Node.js Deployment

Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt

1. Sign up for Digital Ocean

If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a

2. Create a droplet and log in via ssh

I will be using the root user, but would suggest creating a new user

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PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

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Django Deployment to Ubuntu 18.04

In this guide I will go through all the steps to create a VPS, secure it and deploy a Django application. This is a summarized document from this digital ocean doc

Any commands with "$" at the beginning run on your local machine and any "#" run when logged into the server

Create A Digital Ocean Droplet

Use this link and get $10 free. Just select the $5 plan unless this a production app.

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Python Heroku Deployment

Steps to create a postgres database and deply a Python app to Heroku

Install guinicorn locally

pipenv install gunicorn
or
pip install gunicorn

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import mysql.connector
from mysql.connector import errorcode

config = {
    'user': 'root',
    'password': '',
    'host': 'localhost',
    'database': 'acme'
}

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Django 2.x Cheat Sheet

Creating a virtual environment

We need to create a virtual env for our app to run in: More Here Run this command in whatever folder you want to create your venv folder

python -m venv ./venv

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1) npm install -g firebase-tools 
2) firebase login
3) firebase init hosting
4) pick folder
5) firebase serve (if u want to see how the site looks in dev)
6) firebase deploy

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db.collection('cafes').add({
    name: 'jack',
    city: 'bronx'
})