merge pull request #25 from fphammerle/dependabot/docker/alpine-3.16.0

https://github.com/fphammerle/docker-sftpd/pull/25

Dockerfile

@@ -1,6 +1,6 @@
-FROM docker.io/alpine:3.15.4
+FROM docker.io/alpine:3.16.0
 
-ARG OPENSSH_SERVER_PACKAGE_VERSION=8.8_p1-r1
+ARG OPENSSH_SERVER_PACKAGE_VERSION=9.0_p1-r1
 ENV SSHD_HOST_KEYS_DIR=/etc/ssh/host_keys
 ENV CLIENT_USER=nonroot
 ENV CLIENT_HOME=/home/$CLIENT_USER