How to find out tag for using instead of latest?

[Sergey]

Beginning of my Dockerfile is
FROM mcr.microsoft.com/powershell:latest
Now it is version which uses Ubuntu 20.04 with Powershell 7.1.2
How can I replace latest with some tag?
To freeze this image version in future: FROM mcr.microsoft.com/powershell:XXXXXXXXX?
I need to continue using Ubuntu 20.04 with Powershell 7.1.2 when mcr.microsoft.com/powershell:latest will have Ubuntu 21 and Powershell 8 for example.

[Kevin Grimes]

You can get a list of all the available tags for this image from Docker hub.

1. Head to https://hub.docker.com

2. Search for "powershell"

3. Click on the one shipped by Microsoft (https://hub.docker.com/_/microsoft-powershell)

4. Scroll down to "Full Tag Listing" and pick the one that meets your requirements

Sounds like the tag you want is 7.1.2-ubuntu-20.04.