Build UMF on Alpine image

Author: wlemkows

.github/docker/alpine-3.21.Dockerfile

@@ -18,11 +18,9 @@ ENV OS_VER=3.21
 ARG BASE_DEPS="\
 	bash \
 	cmake \
-	doas \
 	git \
 	g++ \
-	make \
-	sudo"
+	make"
 
 # UMF's dependencies
 ARG UMF_DEPS="\
@@ -38,13 +36,3 @@ RUN apk update \
 	${BASE_DEPS} \
 	${TEST_DEPS} \
 	${UMF_DEPS}
-
-# Add a new (non-root) 'test_user'
-#ENV USER test_user
-#ENV USERPASS pass
-RUN adduser -D test_user
-RUN echo "permit persist keepenv :wheel" > /etc/doas.conf
-
-# Add test_user to wheel group (common admin group in Alpine)
-RUN addgroup test_user wheel
-USER test_user