# Local Container Registry

**URL:** <https://forum.mergetb.net/t/local-container-registry/157>\
**Category:** DevOps\
**Created:** [September 3, 2025, 6:25pm UTC](https://forum.mergetb.net/t/local-container-registry/157 "2025-09-03T18:25:28Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![edward\_chan](https://forum.mergetb.net/letter_avatar_proxy/v4/letter/e/53a042/32.png) [@edward\_chan](https://forum.mergetb.net/u/edward_chan)\
**Post date:** [September 3, 2025, 6:25pm UTC](https://forum.mergetb.net/t/local-container-registry/157/1 "2025-09-03T18:25:28Z")

</div>

Due to Bitnami removing containers a local container caching system needs to be implemented to preserve containers and act as a caching mechanism.

Install researching shows that [Harbor](https://goharbor.io/) is a promising solution with Docker and Kubernetes installation paths.

> **[How to prepare for the Bitnami Changes coming soon](https://community.broadcom.com/tanzu/blogs/beltran-rueda-borrego/2025/08/18/how-to-prepare-for-the-bitnami-changes-coming-soon)**

@jdbarnes

---

<div class="post-metadata">

**Author:** ![edward\_chan](https://forum.mergetb.net/letter_avatar_proxy/v4/letter/e/53a042/32.png) [@edward\_chan](https://forum.mergetb.net/u/edward_chan)\
**Post date:** [September 4, 2025, 3:17pm UTC](https://forum.mergetb.net/t/local-container-registry/157/2 "2025-09-04T15:17:05Z")

</div>

Running the test instance of Harbor in a Docker container was a simple installation. Install docker, downloaded the offline GitHub release, extracted files, copied `harbor.yml.tmpl` to `harbor.yml`, made configurations, and finally installed with `sudo ./install.sh --with-trivy`.

After starting, login to the WebGUI. Then the first repository Docker Hub is added.

Next was creating a replication rule to clone containers. Set the appropriate filters then hit replicate. One concern is the Docker hub anonymous pull rate limit. There is a bandwidth cap which can be used to slow down the downloads.

Using the cloned container is also straightforward on the client:  
`sudo docker pull __REGISTRY_ADDRESS__ /bitnami/postgresql:17`

The [pull though cache](https://goharbor.io/docs/2.1.0/administration/configure-proxy-cache/) configuration was really simple, creating a project `cache` and enabling the setting. Then using the command:  
`sudo docker pull __REGISTRY_ADDRESS__ /cache/ __CONTAINER_NAMESPACE__ `

However one goal was to avoid having to rename `docker pull bitnami/postgresql:17` to include the registry prefix `docker pull __REGISTRY_ADDRESS__ /bitnami/postgresql:17`. In Docker, there doesn’t seem to be an explicit method for replacing the default call to `docker.io` to the local registry. This looks to be a [reoccurring issue](https://github.com/moby/moby/issues/33069) across the internet. Mentions of using `registry-mirrors` and editing the host file for redirecting request; the latter not being optimal.