Synology - Manually Update Docker Containers

Below is how I manually update my Synology Docker containers.

I have described here how to update a container using Portainer. It is also possible to perform the update via the CLI.

First make a backup of the data of a container (optional)

  1. Go to Register and download the new image
  2. Stop the old container and rename via Edit for example by adding .save after the name
  3. Select the old container and go to Settings > Duplicate Settings
  4. Give the name of the old container as the name (i.e. without .save) and click Apply
  5. Start the new container

An old .save container can keep port numbers in use. This can be solved by removing the port mappings from the old container and then set the port mappings from the new container appropriately

The containers with .save in the name can be deleted at a later time if the new container works fine

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