Health checks not updated when using duplicate/edit

[Enrico204]

Bug description
Re-creating (or editing) a container won't update healthchecks if they specification changes inside the image specification.

Expected behavior
On container re-creating/edit, health checks settings (such as commands, interval, etc) are updated if they're updated in the container image.

Steps to reproduce the issue:

1. Create a container image with an healthcheck (type CMD-SHELL)
2. Run a container from that image
3. Update the image, changing healthchecks parameters (I tried changing CMD-SHELL in CMD)
4. Re-create (or edit) the container. The new container will use old configurations for healthchecks.

Technical details:

• Portainer version: 1.22.1
• Docker version (managed by Portainer): 19.03.1
• Platform (windows/linux): Debian Linux 9
• Command used to start Portainer: docker run -d -p 9000:9000 -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer
• Browser: Firefox

Additional context
Healthchecks are created correctly if no healthchecks were specified in the previous image definition.

[ghost]

Confirmed on 1.23.2

[ghost]

Reproduced on development branch. Closing as this will be addressed via #3964 in v2.0

[ghost]

This will actually be fixed via the introduction of healthcheck functionality via container create/duplicate in #3572