Error: bind EADDRINUSE null:3000

[zygopleural]

Using this configuration causes the api health check to look on port 10000.

Setting

envVars:
      - key: PORT
        value: "3000"

does make the health check now look at :3000/api/healthCheck, but also causes the deployment to crash with the error:

Sep 22 08:29:43 PM  Starting static http server on port 3000
Sep 22 08:29:43 PM  {"address":null,"code":"EADDRINUSE","errno":-98,"level":"error","message":"There was an uncaught error bind EADDRINUSE null:3000","port":3000,"stack":"Error: bind EADDRINUSE null:3000\n    at listenOnPrimaryHandle (node:net:1397:18)\n    at rr (node:internal/cluster/child:155:12)\n    at Worker.<anonymous> (node:internal/cluster/child:109:7)\n    at process.onInternalMessage (node:internal/cluster/utils:49:5)\n    at process.emit (node:events:538:35)\n    at processEmit [as emit] (/snapshot/retool_development/node_modules/signal-exit/index.js:199:34)\n    at emit (node:internal/child_process:938:14)\n    at processTicksAndRejections (node:internal/process/task_queues:84:21)","syscall":"bind","timestamp":"2023-09-22T19:29:43.106Z"}
Sep 22 08:29:43 PM  {"error":{"address":null,"code":"EADDRINUSE","errno":-98,"message":"bind EADDRINUSE null:3000","name":"Error","port":3000,"stack":"Error: bind EADDRINUSE null:3000\n    at listenOnPrimaryHandle (node:net:1397:18)\n    at rr (node:internal/cluster/child:155:12)\n    at Worker.<anonymous> (node:internal/cluster/child:109:7)\n    at process.onInternalMessage (node:internal/cluster/utils:49:5)\n    at process.emit (node:events:538:35)\n    at processEmit [as emit] (/snapshot/retool_development/node_modules/signal-exit/index.js:199:34)\n    at emit (node:internal/child_process:938:14)\n    at processTicksAndRejections (node:internal/process/task_queues:84:21)","syscall":"bind"},"level":"error","message":"There was an uncaught error","timestamp":"2023-09-22T19:29:43.107Z"}
Sep 22 08:29:43 PM  {"address":null,"code":"EADDRINUSE","errno":-98,"level":"error","message":"There was an uncaught error bind EADDRINUSE null:3000","port":3000,"stack":"Error: bind EADDRINUSE null:3000\n    at listenOnPrimaryHandle (node:net:1397:18)\n    at rr (node:internal/cluster/child:155:12)\n    at Worker.<anonymous> (node:internal/cluster/child:109:7)\n    at process.onInternalMessage (node:internal/cluster/utils:49:5)\n    at process.emit (node:events:538:35)\n    at processEmit [as emit] (/snapshot/retool_development/node_modules/signal-exit/index.js:199:34)\n    at emit (node:internal/child_process:938:14)\n    at processTicksAndRejections (node:internal/process/task_queues:84:21)","syscall":"bind","timestamp":"2023-09-22T19:29:43.110Z"}
Sep 22 08:29:43 PM  {"error":{"address":null,"code":"EADDRINUSE","errno":-98,"message":"bind EADDRINUSE null:3000","name":"Error","port":3000,"stack":"Error: bind EADDRINUSE null:3000\n    at listenOnPrimaryHandle (node:net:1397:18)\n    at rr (node:internal/cluster/child:155:12)\n    at Worker.<anonymous> (node:internal/cluster/child:109:7)\n    at process.onInternalMessage (node:internal/cluster/utils:49:5)\n    at process.emit (node:events:538:35)\n    at processEmit [as emit] (/snapshot/retool_development/node_modules/signal-exit/index.js:199:34)\n    at emit (node:internal/child_process:938:14)\n    at processTicksAndRejections (node:internal/process/task_queues:84:21)","syscall":"bind"},"level":"error","message":"There was an uncaught error","timestamp":"2023-09-22T19:29:43.110Z"}
Sep 22 08:29:43 PM  node:events:504
Sep 22 08:29:43 PM        throw er; // Unhandled 'error' event
Sep 22 08:29:43 PM        ^
Sep 22 08:29:43 PM  
Sep 22 08:29:43 PM  Error: bind EADDRINUSE null:3000
Sep 22 08:29:43 PM      at listenOnPrimaryHandle (node:net:1397:18)
Sep 22 08:29:43 PM      at rr (node:internal/cluster/child:155:12)
Sep 22 08:29:43 PM      at Worker.<anonymous> (node:internal/cluster/child:109:7)
Sep 22 08:29:43 PM      at process.onInternalMessage (node:internal/cluster/utils:49:5)
Sep 22 08:29:43 PM      at process.emit (node:events:538:35)
Sep 22 08:29:43 PM      at processEmit [as emit] (/snapshot/retool_development/node_modules/signal-exit/index.js:199:34)
Sep 22 08:29:43 PM      at emit (node:internal/child_process:938:14)
Sep 22 08:29:43 PM      at processTicksAndRejections (node:internal/process/task_queues:84:21)
Sep 22 08:29:43 PM  Emitted 'error' event on Server instance at:
Sep 22 08:29:43 PM   {
Sep 22 08:29:43 PM    errno: -98,
Sep 22 08:29:43 PM    code: 'EADDRINUSE',
Sep 22 08:29:43 PM    syscall: 'bind',
Sep 22 08:29:43 PM    address: null,
Sep 22 08:29:43 PM    port: 3000
Sep 22 08:29:43 PM  }
Sep 22 08:29:43 PM  node:events:504
Sep 22 08:29:43 PM        throw er; // Unhandled 'error' event
Sep 22 08:29:43 PM        ^
Sep 22 08:29:43 PM  
Sep 22 08:29:43 PM  Error: bind EADDRINUSE null:3000
Sep 22 08:29:43 PM      at listenOnPrimaryHandle (node:net:1397:18)
Sep 22 08:29:43 PM      at rr (node:internal/cluster/child:155:12)
Sep 22 08:29:43 PM      at Worker.<anonymous> (node:internal/cluster/child:109:7)
Sep 22 08:29:43 PM      at process.onInternalMessage (node:internal/cluster/utils:49:5)
Sep 22 08:29:43 PM      at process.emit (node:events:538:35)
Sep 22 08:29:43 PM      at processEmit [as emit] (/snapshot/retool_development/node_modules/signal-exit/index.js:199:34)
Sep 22 08:29:43 PM      at emit (node:internal/child_process:938:14)
Sep 22 08:29:43 PM      at processTicksAndRejections (node:internal/process/task_queues:84:21)
Sep 22 08:29:43 PM  Emitted 'error' event on Server instance at:
Sep 22 08:29:43 PM   {
Sep 22 08:29:43 PM    errno: -98,
Sep 22 08:29:43 PM    code: 'EADDRINUSE',
Sep 22 08:29:43 PM    syscall: 'bind',
Sep 22 08:29:43 PM    address: null,
Sep 22 08:29:43 PM    port: 3000
Sep 22 08:29:43 PM  }
Sep 22 08:29:43 PM  {"level":"info","message":"[Master] Worker 239 died (code 1, signal null). 2 workers left","timestamp":"2023-09-22T19:29:43.224Z"}

Any ideas?