add dockerfile and scripts

docker/scripts/1-renew-cert.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# Certificates exist
+if [ -n "$DOMAIN" -a -d /etc/letsencrypt/live/"$DOMAIN" ]; then
+  # Check certificates and renew them
+  certbot renew --http-01-port=380
+
+  # Concatenate certificates
+  . /etc/scripts/2-concatenate-cert.sh
+
+  # Update certificates in HAProxy
+  . /etc/scripts/3-update-haproxy-cert.sh
+
+# Certificates don't exist
+else
+  #  Execute certificate creation script
+  . /etc/scripts/0-create-cert.sh
+fi
+