Here are the steps to update Phoenix Live SaaS Kit for Fly and Phoenix 1.6.9:

Initial Deployment

1. git init, git add ., git commit -m "init repo"
2. Remove generated docker & deploy script files

• build.sh
• docker-entrypoint.sh
• .dockerignore
• Dockerfile
• docker-compose.yml

4. Update .tool-versions:

elixir 1.13.4-otp-24 
erlang 24.3.4

5. Open mix.exs and update phoenix to 1.6.9 & phoenix_html to 3.2.0
6. Run mix deps.get
7. Run cd assets then rm yarn.lock. Will use npm to match Dockerfile.
8. Run npm install
9. Update runtime.exs database config:

  maybe_ipv6 = if System.get_env("ECTO_IPV6"), do: [:inet6], else: []

  config :demo, Demo.Repo,
    # ssl: true,
    url: database_url,
    pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
    socket_options: maybe_ipv6

See: https://community.fly.io/t/how-to-run-ecto-create-for-an-elixir-app/5001/2

10. Update runtime.ex endpoint config.

  host = System.get_env("PHX_HOST") || "example.com"
  port = String.to_integer(System.get_env("PORT") || "4000")

  config :demo, DemoWeb.Endpoint,
    url: [host: host, port: 443, scheme: "https"],
    http: [
      # Enable IPv6 and bind on all interfaces.
      # Set it to  {0, 0, 0, 0, 0, 0, 0, 1} for local network only access.
      # See the documentation on https://hexdocs.pm/plug_cowboy/Plug.Cowboy.html
      # for details about using IPv6 vs IPv4 and loopback vs public addresses.
      ip: {0, 0, 0, 0, 0, 0, 0, 0},
      port: port
    ],
    secret_key_base: secret_key_base

Source: [error] Could not check origin for Phoenix.Socket transport. Origin of the request: https://live-saas-kit-demo.fly.dev. This happens when you are attempting a socket connection to a different host than the one configured in your config/ files.

9. Run fly launch, but do NOT deploy app because we need to update the Dockerfile
10. Add nodejs && npm and add RUN cd assets && npm install to Dockerfile

Steps 1 & 3 from:

https://community.fly.io/t/elixir-getting-started-guide/1356/59

NOTE: Step 2 is already complete in the generated Dockerfile.

11. Run fly deploy --remote-only to finish deployment

Admin Config

Additional setup steps from Fullstack Phoenix

1. Add Guardian secrets using mix guardian.gen.secret

$ fly secrets set GUARDIAN_SECRET_KEY=secret GUARDIAN_SECRET_KEY_ADMINS=secret

2. Create an admin using instructions from Fullstack Phoenix Admin Area.

GitHub Actions

1. Delete .github/wokflows/ci.yml
2. Create new repo on GitHub
3. Generate Fly API token with fly auth token
4. Store value as FLY_API_TOKEN in GitHub repository secrets
5. Add .github/workflows/main.yml from hello_fly project.
6. Merge changes and push to GitHub

Email Config

1. Sign up for a Mailgun account
2. Add hackney package to mix.exs and configure the Mailgun adapter (can uncomment runtime.config file).

    config :demo, Demo.Mailer,
       adapter: Swoosh.Adapters.Mailgun,
       api_key: System.get_env("MAILGUN_API_KEY"),
       domain: System.get_env("MAILGUN_DOMAIN")
       
     config :swoosh, :api_client, Swoosh.ApiClient.Hackney

3. Set API Key and Domain as secrets in Fly

    fly secrets set MAILGUN_API_KEY=my-api-key MAILGUN_DOMAIN=example.com

4. Add authorized recipients (Mailgun sandbox mode only)
5. Update config.exs with from_email. Also update other company info...