peg Pode to 2.12.1, not latest (lol), don't need labs syntax anymore

Changed files
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Dockerfile
··· 1 - # syntax=docker/dockerfile:1-labs 2 - FROM badgerati/pode:latest 1 + FROM badgerati/pode:2.12.1 3 2 SHELL ["pwsh", "-c"] 4 3 5 4 RUN apt-get update