chore(doc):Add guide to Deploy Gatsby to DigitalOcean droplet.

docs/docs/deploying-to-digitalocean-droplet.md

@@ -0,0 +1,238 @@
+---
+title: Deploying to a DigitalOcean Droplet
+---
+
+This guide walks through how to deploy and host your Gatsby site on a [DigitalOcean Droplet](https://www.digitalocean.com/products/droplets/).
+
+DigitalOcean provides a cloud platform to deploy, manage, and scale applications of any size, removing infrastructure friction and providing predictability so developers and their teams can spend more time building better software.
+
+DigitalOcean's product droplets are scalable compute IaaS (Infrastructure as a Service) or a VPS (Virtual Private Server) on the cloud which has great reliability and scalability. They come with varied price ranges ideal for small apps to giant enterprise-level apps.
+
+They provide service to select from various Unix-based distributions and select your technology-based platform with preinstalled pre-requisites from the marketplace. This guide will walk through the specific options that work best for deploying a Gatsby site with DigitalOcean.
+
+A Droplet can be spun up in less than a minute for as little as \$5/month.
+
+## Prerequisites
+
+- A Gatsby site living in a Git repository (GitHub, GitLab, or any Git cloud)
+- A [DigitalOcean Droplet](https://www.digitalocean.com/products/droplets/) with a non-root user configured with sudo group ([example: Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-create-a-new-sudo-enabled-user-on-ubuntu-18-04-quickstart))
+- A custom domain name for your Gatsby site to help with configuring HTTPS
+
+## How to deploy your Gatsby site to DigitalOcean
+
+### Install NodeJS, NPM and Gatsby-CLI onto your droplet
+
+Follow these instructions for installs on an Ubuntu droplet.
+
+1. Log in to your droplet as a non-root user.
+
+2. Install NodeJS
+
+   ```bash
+   sudo apt-get update
+   sudo apt-get install nodejs
+   ```
+
+3. Install npm
+
+   ```bash
+   sudo apt-get install npm
+   ```
+
+   To view the version of node and npm installed, run,
+
+   ```bash
+   node -v
+   npm -v
+   ```
+
+4. To install the latest stable release using the `n` package (Optional) (Recommended),
+
+   ```bash
+   sudo npm install -g n
+   sudo n stable
+   ```
+
+   `Note`: If you check the version now, you would see the older versions of node and npm from the cache.
+   You can either exit and restart your terminal or refresh the cache by following commands,
+
+   ```bash
+   hash node
+   hash npm
+   ```
+
+5. Install the gatsby-cli now globally. This will be useful ahead in building the Gatsby site for production.
+
+   ```bash
+   sudo npm install -g gatsby-cli
+   ```
+
+### Clone your repository to the droplet
+
+The next step is to clone the repository containing your Gatsby app (Replace `<your-github-repo-site>` with your Github repository link)
+
+```bash
+git clone <your-github-repo-site>
+```
+
+> Note: this guide will refer to the cloned directory as `<my-gatsby-app>` for simplicity.
+
+### Build your gatsby site to generate a static site for production
+
+The static files will be hosted publicly on the droplet. The `gatsby build` command provides utility to build the site and generate the static files in the `/public`.
+
+1. Install dependencies.
+
+```bash
+cd my-gatsby-app
+sudo npm install
+```
+
+2. Run build to generate static files.
+
+```bash
+sudo gatsby build
+```
+
+### Install Nginx Web Server to host the static site and open firewall to accept HTTP and HTTPS requests
+
+To host a website or static files onto a Linux-based server/VPS, a web-server like Apache or Nginx is required.
+
+Nginx is web-server. It provides the infrastructure code for handling client requests from the World Wide Web, along with features like a load balancer, mail proxy, and HTTP Cache.
+
+1. Install Nginx.
+
+   ```bash
+   sudo apt-get install nginx
+   ```
+
+2. Configure firewall settings of the droplet to listen to HTTP and HTTPS requests on port 80 and 443 respectively.
+
+   ```bash
+   sudo ufw allow 'Nginx HTTP'
+   sudo ufw allow 'Nginx HTTPS'
+   ```
+
+3. To check the access,
+
+   ```bash
+   sudo ufw app list
+   ```
+
+4. If `ufw` status is disabled/inactive, you can enable it with the following command:
+
+   ```bash
+   sudo ufw enable
+   ```
+
+   Allow the OpenSSH if not already done, to not disconnect from your droplet.
+
+   ```bash
+   sudo ufw allow 'OpenSSH'
+   ```
+
+### Configuring Nginx to point to your Gatsby site's `/public` directory and add your domain
+
+Change the root directory configuration of Nginx in the default server block file
+
+1. Go to `/etc/nginx/sites-available/`
+
+   ```bash
+   cd /etc/nginx/sites-available/
+   ```
+
+2. Open the file default
+
+   ```bash
+   sudo vim default
+   ```
+
+3. Edit the file and make the following changes for below-mentioned fields, leave the rest of the fields as is.
+
+   ```bash
+   server {
+     root <path to my-gatsby-app>/public;
+
+     index index.html index.htm index.nginx-debian.html;
+
+     server_name <your-domain-name>;
+
+     location / {
+       try_files $uri $uri/ =404;
+     }
+   }
+   ```
+
+4. Restart the Nginx service
+
+   ```bash
+   sudo systemctl restart nginx
+   ```
+
+5. Configure your domain to point to the IP address of your droplet. Go to the Advanced DNS settings in your domain provider's console and put an A record that points to the IP address of the droplet.
+
+6. By this time, you can view your site live at `<your-domain>`.
+
+### Configuring HTTPS for your Gatsby Site
+
+Follow the below steps to configure your site with a free SSL/TLS certificate from Lets Encrypt using their Certbot CLI tool.
+
+1. Install Certbot onto your droplet.
+
+   You'll need to add the Certbot PPA (Personal Package Archives) to your list of repositories. To do so, run the following commands:
+
+   ```bash
+   sudo apt-get update
+   sudo add-apt-repository ppa:certbot/certbot
+   sudo apt-get update
+   ```
+
+   Run the following commands to install Certbot.
+
+   ```bash
+   sudo apt-get install certbot python3-certbot-nginx
+   ```
+
+2. Generate the certificate. Certbot will automatically edit and configure the Nginx config file and point to the certificate file.
+
+   Run the following command:
+
+   ```bash
+   sudo certbot --nginx
+   ```
+
+3. If you are using Certbot for the first time on this droplet then you will be prompted to enter your e-mail for recovery purposes.
+
+4. Agree to the license agreement on prompt.
+
+   `Note`: You will be prompted to select the domain for which you want to generate the certificate. Select the domain configured in a [previous step](#configuring-nginx-to-point-to-your-gatsby-site's-`public`-directory-and-add-your-domain).
+
+   `Note`: You will be prompted to choose the option to redirect HTTP requests to HTTPS, which you may choose on your needs.
+   (It is recommended to choose to redirect HTTP to HTTPS)
+
+5. Restart the nginx service.
+
+   ```bash
+   sudo systemctl restart nginx
+   ```
+
+6. Now, you can access your site at `<your-domain>` with a secure connection.
+
+### View your Gatsby site live
+
+Once you've followed along with all the steps and configuration properly, you can visit your site live at `<your-domain>`.
+
+Whenever there's an update to your site, run a `sudo gatsby build` in the root of your `<my-gatsby-app>` and your changes will be live.
+
+Congratulations! You've deployed your Gatsby App on a DigitalOcean droplet along with configuring HTTPS for it.
+
+## Additional resources
+
+There's a lot more to learn about DigitalOcean's Droplets, Ubuntu configurations, and Nginx. Below are some links which could be useful in achieving the prerequisites of this post:
+
+- [Microblog - Create a new non-root user with sudo privileges on Ubuntu-based DigitalOcean Droplet configured with SSH](https://dev.to/mistryvatsal/microblog-create-a-new-non-root-user-with-sudo-privileges-on-ubuntu-based-digitalocean-droplet-configured-with-ssh-1l3)
+- [Official DigitalOcean Docs](https://www.digitalocean.com/docs/)
+- [Official Nginx Docs](http://nginx.org/en/docs/)
+- [Configuring HTTPS Servers with Nginx](http://nginx.org/en/docs/http/configuring_https_servers.html)
+- [How To Install Nginx on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-ubuntu-18-04)
+- [How To Secure Nginx with Let's Encrypt on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-18-04)

www/src/data/sidebars/doc-links.yaml

@@ -72,6 +72,9 @@
             - title: Deploying to AWS Amplify
               link: /docs/deploying-to-aws-amplify/
               breadcrumbTitle: AWS Amplify
+            - title: Deploying to a DigitalOcean Droplet
+              link: /docs/deploying-to-digitalocean-droplet/
+              breadcrumbTitle: DigitalOcean
             - title: Deploying to S3 & CloudFront
               link: /docs/deploying-to-s3-cloudfront/
               breadcrumbTitle: S3 & CloudFront