templates: do not set root password if empty

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

templates/alpine.Dockerfile

@@ -12,7 +12,7 @@ RUN apk update --no-cache && \
 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 .Password }}RUN echo "root:{{ .Password }}" | chpasswd {{ end }}
 
 {{ if eq .NetworkManager "ifupdown"}}
 RUN apk add --no-cache ifupdown-ng

templates/centos.Dockerfile

@@ -17,4 +17,4 @@ RUN dracut --no-hostonly --regenerate-all --force && \
     ln -s $(find . -name 'vmlinuz-*') vmlinuz && \
     ln -s $(find . -name 'initramfs-*.img') initrd.img
 
-RUN echo "root:{{- if .Password}}{{ .Password}}{{- else}}root{{- end}}" | chpasswd
+{{ if .Password }}RUN echo "root:{{ .Password }}" | chpasswd {{ end }}

templates/debian.Dockerfile

@@ -16,7 +16,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
 
 RUN systemctl preset-all
 
-RUN echo "root:{{- if .Password}}{{ .Password}}{{- else}}root{{- end}}" | chpasswd
+{{ if .Password }}RUN echo "root:{{ .Password }}" | chpasswd {{ end }}
 
 {{ if eq .NetworkManager "netplan" }}
 RUN apt install -y netplan.io

templates/ubuntu.Dockerfile

@@ -15,7 +15,7 @@ RUN apt-get update -y && \
 
 RUN systemctl preset-all
 
-RUN echo "root:{{- if .Password}}{{ .Password}}{{- else}}root{{- end}}" | chpasswd
+{{ if .Password }}RUN echo "root:{{ .Password }}" | chpasswd {{ end }}
 
 {{ if eq .NetworkManager "netplan" }}
 RUN apt install -y netplan.io