React app in Docker fetch can't find a server

Bart Walczak — Sun, 08 Jan 2023 09:18:31 +0000

I've got a React app build with Create-React-App running inside a docker container.

This code:

    const req = new Request(
        apiAdminUrl + '/login', {
        method: 'POST',
        body: formData
    }
    return fetch(req).then(processResp, processErr);

Returns TypeError: Load failed, "Failed to load resource: A server with the specified hostname could not be found."

But the curl request from the same container works without issues:

curl -d "email=admin@some.etc" -d "pwd=xxx" -X POST http://api-admin:3000/v1/login

CORS is enabled in the api code. apiAdminUrl is properly set as http://api-admin:3000/v1.

What am I missing?

DEV Community: Bart Walczak

React app in Docker fetch can't find a server