Automated builds

Originally created by Tails on #6090 (Redmine)

Blueprint: https://tails.boum.org/blueprint/automated_builds_and_tests

Subtasks

• tails#6132 (closed)
• #6269 (closed)

Related issues

• Related to #5288 (closed)
• Related to #6220 (closed)
• Related to #10334 (closed)