git subrepo commit (merge) mailcow/src/mailcow-dockerized

subrepo: subdir:   "mailcow/src/mailcow-dockerized"
  merged:   "02ae5285"
upstream: origin:   "https://github.com/mailcow/mailcow-dockerized.git"
  branch:   "master"
  commit:   "649a5c01"
git-subrepo: version:  "0.4.3"
  origin:   "???"
  commit:   "???"
Change-Id: I870ad468fba026cc5abf3c5699ed1e12ff28b32b
diff --git a/mailcow/src/mailcow-dockerized/data/Dockerfiles/acme/Dockerfile b/mailcow/src/mailcow-dockerized/data/Dockerfiles/acme/Dockerfile
index 8369ce3..a19c434 100644
--- a/mailcow/src/mailcow-dockerized/data/Dockerfiles/acme/Dockerfile
+++ b/mailcow/src/mailcow-dockerized/data/Dockerfiles/acme/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.11
+FROM alpine:3.13
 
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
@@ -14,8 +14,9 @@
   tini \
   tzdata \
   python3 \
-  && python3 -m pip install --upgrade pip \
-  && python3 -m pip install acme-tiny
+  py3-pip \
+  && pip3 install --upgrade pip \
+  && pip3 install acme-tiny
 
 COPY acme.sh /srv/acme.sh
 COPY functions.sh /srv/functions.sh