docker-fly

Example Project from A First Look at Fly

Fly is a platform for full stack applications and databases that need to run globally. Fly executes your code close to users and scales compute in cities where your app is busiest. You can run arbitrary Docker containers and host popular databases like Postgres.

Clone Repo and Navigate to Project

git clone https://github.com/ajcwebdev/a-first-look.git
cd deployment/docker-fly

Fly Setup

Install flyctl

You can download the CLI on Mac, Linux, or Windows.

brew install superfly/tap/flyctl

Create Fly Account

flyctl auth signup

Login to Fly Account

flyctl auth login

2. Node server with Express in index.js

const express = require("express")
const app = express()

const port = process.env.PORT || 3000

app.get(
  "/", (req, res) => {
    greeting = "<h1>ajcwebdev-fly</h1>"
    res.send(greeting)
  }
)

app.listen(
  port,
  () => console.log(`Hello from port ${port}!`)
)

Run server

node index.js

Hello from port 3000!

Dockerfile

FROM node:14-alpine
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm i
COPY . ./
EXPOSE 8080
CMD [ "node", "index.js" ]

.dockerignore

node_modules
Dockerfile
.dockerignore
.git
.gitignore
npm-debug.log

3. Launch app on Fly with flyctl launch

Run flyctl launch in the directory with your source code to configure your app for deployment. This will create and configure a fly app by inspecting your source code and prompting you to deploy.

flyctl launch --name ajcwebdev-fly --region sjc

This creates a fly.toml file.

app = "ajcwebdev-fly"

kill_signal = "SIGINT"
kill_timeout = 5

[env]

[experimental]
  allowed_public_ports = []
  auto_rollback = true

[[services]]
  http_checks = []
  internal_port = 8080
  protocol = "tcp"
  script_checks = []

[services.concurrency]
  hard_limit = 25
  soft_limit = 20
  type = "connections"

[[services.ports]]
  handlers = ["http"]
  port = 80

[[services.ports]]
  handlers = ["tls", "http"]
  port = 443

[[services.tcp_checks]]
  grace_period = "1s"
  interval = "15s"
  restart_limit = 6
  timeout = "2s"

Add the following PORT number under env.

[env]
  PORT = 8080

Deploy application with flyctl deploy

flyctl deploy

Show the application's current status with flyctl status

flyctl status

Open browser to current deployed application with flyctl open

flyctl open

Opening http://ajcwebdev-fly.fly.dev/

Visit ajcwebdev-fly.fly.dev to see the site.