Switch to alpine:edge on PHP 8.1

DanPeggParallax · DanPeggParallax · commit 1328e675c78a · 2021-12-21T10:48:17.000Z
diff --git a/php/Dockerfile-8.1 b/php/Dockerfile-8.1
@@ -1,4 +1,4 @@
-FROM alpine:3.15
+FROM alpine:edge
 
 ARG PHP_VERSION=8
 ARG ATATUS_VERSION=1.12.0
