Minimal Alpine Linux on a 1 GB Btrfs Root Disk

I sometimes need a tiny cloud instance that only forwards traffic. CPU and memory can be small, and the disk is mostly wasted space. On one Alibaba Cloud ecs.t6-c4m1.large instance, a 1 GB root disk on a long contract can push the cost down to about $0.40/month, but a normal Linux install leaves too little usable space. The trick is not complicated: Use Alpine Linux, because the base system is…