build and convert implementations

centos: WIP

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

templates/centos.Dockerfile

@@ -0,0 +1,18 @@
+FROM {{ .Image }}
+
+USER root
+
+RUN sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* && \
+    sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
+
+RUN yum update -y && \
+    yum install -y kernel systemd
+
+RUN systemctl preset-all && \
+    systemctl enable getty@ttyS0
+
+RUN cd /boot && \
+    ln -s $(find . -name 'vmlinuz-*') vmlinuz && \
+    ln -s $(find . -name 'initramfs-*.img') initrd.img
+
+RUN echo "root:{{- if .Password}}{{ .Password}}{{- else}}root{{- end}}" | chpasswd