Arti image for Alpine

Description

The Arti build for Alpine is failing, and needs additional work before being [merged][], maybe in collaboration with tpo/core/arti#1904.

Tasks

• Build an Alpine Arti image variant.
• Test the Alpine Arti image.

Time estimation

• Complexity: very small (0.5 day)
• Uncertainty: low (x1.1)
• Reference (adapted)