Automated builds: complete phase one

Originally created by Tails on #5324 (Redmine)

Subtasks

• #5352 (closed)
• #5558 (closed)
• #5653 (closed)
• #5747 (closed)
• #5898 (closed)
• #6056 (closed)
• #6196 (closed)
• tails#6439 (closed)
• tails#9740 (closed)
• #9750 (closed)

Related issues

• Related to tails#6298 (closed)
• Related to tails#9614 (closed)