Deploying base/default Remix App to Fly.io throws 502 error

3

this is a valid point, but I just came to a realization about fly’s “launch” command that creates the fly.toml file:

As a first-time user of Fly.io, I did not know that a [dev] section was required as the default fly.toml file does not produce this. To be clear:
If one uses flyctl launch , you will see the following:

# fly.toml app configuration file generated for remix-app-deploytest2 on 2024-10-07T16:26:07-04:00
#
# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
#

app = 'app-name-you-chose'
primary_region = 'ewr'

[build]

[http_service]
  internal_port = 3000
  force_https = true
  auto_stop_machines = true
  auto_start_machines = true
  min_machines_running = 0
  processes = ['app']

[[vm]]
  memory = '1gb'
  cpu_kind = 'shared'
  cpus = 1

However, adding the following made this deployment finally work:

# fly.toml app configuration file generated for remix-app-deploytest2 on 2024-10-07T16:26:07-04:00
#
# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
#

app = 'app-name-you-chose'
primary_region = 'ewr'

[build]

[env] 

 PORT = "3000"

 SHOPIFY_APP_URL = "https://app-name-you-chose.fly.dev"

 SHOPIFY_API_KEY = "your-key-made-by-shopify"

 SCOPES = "scopes-defined-in-shopify.app.toml"

[http_service]
  internal_port = 3000
  force_https = true
  auto_stop_machines = true
  auto_start_machines = true
  min_machines_running = 0
  processes = ['app']

[[vm]]
  memory = '1gb'
  cpu_kind = 'shared'
  cpus = 1

For anyone who is struggling to deploy a Shopify Remix application, I highly recommend this guide