docs: add minimum versions [skip ci]

templates: remove extra line continuation

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

templates/alpine.Dockerfile

@@ -9,16 +9,9 @@ RUN apk update --no-cache && \
       busybox-initscripts \
       openrc
 
-#RUN apk update --no-cache && \
-#    apk add \
-#      linux-virt \
-#      alpine-base \
-#      openssh-server
-
 RUN for s in bootmisc hostname hwclock modules networking swap sysctl urandom syslog; do rc-update add $s boot; done
 RUN for s in devfs dmesg hwdrivers mdev; do rc-update add $s sysinit; done
 
-
 RUN echo "root:{{- if .Password}}{{ .Password}}{{- else}}root{{- end}}" | chpasswd
 
 {{ if eq .NetworkManager "ifupdown"}}