diff --git a/src/main.cr b/src/main.cr
index 10261b3..97f3668 100644
--- a/src/main.cr
+++ b/src/main.cr
@@ -147,8 +147,6 @@ class RootFS::RootFS
 		template_version = template_as_array[1]?
 		template_architecture = template_as_array[2]?
 
-		# FIXME: Alternate backends.
-		# FIXME: template string parsing.
 		is_btrfs = true # FIXME: do the actual detection
 
 		unless is_btrfs
@@ -161,6 +159,20 @@ class RootFS::RootFS
 			version = template_version || "buster"
 
 			execute "debootstrap --arch amd64 '#{version}' '#{@directory}'"
+		elsif template_name == "alpine"
+			version = template_version || "latest-stable"
+
+			if version == "latest"
+				version = "latest-stable"
+			elsif version == "latest-stable" || version == "edge"
+			else
+				version = "v" + version
+			end
+
+			# FIXME: We should homogeneize triplets.
+			arch = template_architecture || "x86_64"
+
+			execute "apk --arch '#{arch}' -X http://dl-cdn.alpinelinux.org/alpine/#{version}/main/ -U --allow-untrusted --root '#{@directory}' --initdb add alpine-base"
 		end
 	end