# Dockerfile start-dev vs start

**URL:** <https://forum.keycloak.org/t/dockerfile-start-dev-vs-start/19408>\
**Category:** Configuring the server\
**Created:** [January 5, 2023, 9:49am UTC](https://forum.keycloak.org/t/dockerfile-start-dev-vs-start/19408 "2023-01-05T09:49:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![davehardyuk](https://yyz2.discourse-cdn.com/free1/user_avatar/forum.keycloak.org/davehardyuk/32/7352_2.png) [@davehardyuk](https://forum.keycloak.org/u/davehardyuk)\
**Post date:** [January 5, 2023, 9:49am UTC](https://forum.keycloak.org/t/dockerfile-start-dev-vs-start/19408/1 "2023-01-05T09:49:35Z")

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I’m using the Dockerfile on this page as a base: [Running Keycloak in a container - Keycloak](https://www.keycloak.org/server/containers) running version 20.0.2

When running start-dev with no options, it’s running fine, however when running just the “start” command, the site fails to load and a js error appears:

`Uncaught (in promise) {error: 'Timeout when waiting for 3rd party check iframe message.'}`

Any ideas as to how I can combat that? I’m deploying the Docker image via AWS CDK

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**Author:** ![bfall](https://avatars.discourse-cdn.com/v4/letter/b/3da27b/32.png) [@bfall](https://forum.keycloak.org/u/bfall)\
**Post date:** [February 5, 2023, 10:34am UTC](https://forum.keycloak.org/t/dockerfile-start-dev-vs-start/19408/2 "2023-02-05T10:34:30Z")

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I have the same issue running keycloak-20.0.2 in a virtual machine I when try log in the console

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**Author:** ![dasniko](https://yyz2.discourse-cdn.com/free1/user_avatar/forum.keycloak.org/dasniko/32/2969_2.png) [@dasniko](https://forum.keycloak.org/u/dasniko)\
**Post date:** [February 5, 2023, 8:58pm UTC](https://forum.keycloak.org/t/dockerfile-start-dev-vs-start/19408/3 "2023-02-05T20:58:45Z")

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Most likely this is an issue with proper `hostname` configuration.  
And/or proper proxy settings.