feat(archsetup): configure Docker to use ZFS storage driver on ZFS systems

Creates /etc/docker/daemon.json with storage-driver: zfs when running
on a ZFS root filesystem. This provides better performance and enables
Docker to leverage ZFS snapshots.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/archsetup b/archsetup
index 2f75055..17a7163 100755
--- a/archsetup
+++ b/archsetup
@@ -1457,6 +1457,15 @@ developer_workstation () {
     pacman_install docker-compose
     action="adding user to docker group" && display "task" "$action"
     (gpasswd -a "$username" docker >> "$logfile" 2>&1)  || error "error" "$action" "$?"
+    if is_zfs_root; then
+        action="configuring docker to use ZFS storage driver" && display "task" "$action"
+        mkdir -p /etc/docker
+        cat > /etc/docker/daemon.json << 'EOF'
+{
+  "storage-driver": "zfs"
+}
+EOF
+    fi
     action="enabling docker service to launch on boot" && display "task" "$action"
     systemctl enable docker.service >> "$logfile" 2>&1  || error "error" "$action" "$?"
 }