revert, no builds for 8.1 in 3.15

Lawrence Dudley · Lawrence Dudley · commit b3d5e1fca336 · 2022-04-05T11:27:34.000+01:00
diff --git a/php/Dockerfile-8.1 b/php/Dockerfile-8.1
@@ -1,4 +1,4 @@
-FROM alpine:v3.15
+FROM alpine:edge
 
 ARG PHP_VERSION=8
 ARG ATATUS_VERSION=1.13.0
