haproxy: Update Dockerfile

images/haproxy/Dockerfile

@@ -1,8 +1,6 @@
 FROM debian:stretch
 
-RUN echo deb http://deb.debian.org/debian jessie-backports main  >> /etc/apt/sources.list
-RUN apt-get update && apt-get install -y haproxy cron \
-    && apt-get install -y certbot -t jessie-backports
+RUN apt-get update && apt-get install -y haproxy cron certbot
 
 RUN mkdir -p /run/haproxy
 

images/haproxy/Dockerfile.template

@@ -1,8 +1,10 @@
 FROM BASE_IMAGE_PLACEHOLDER
 
-RUN echo deb http://deb.debian.org/debian jessie-backports main  >> /etc/apt/sources.list
-RUN apt-get update && apt-get install -y haproxy cron \
-    && apt-get install -y certbot -t jessie-backports
+#RUN echo deb http://deb.debian.org/debian jessie-backports main  >> /etc/apt/sources.list
+#RUN apt-get update && apt-get install -y haproxy cron \
+#    && apt-get install -y certbot -t jessie-backports
+
+RUN apt-get update && apt-get install -y haproxy cron certbot
 
 RUN mkdir -p /run/haproxy