add dockerfile and scripts

docker/scripts/0-create-cert.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+set -e
+
+if [ ! -f /etc/certificates/site.pem ]; then
+  # Generate self-signed certificate
+  openssl genrsa -out site.key 2048
+  openssl req -new -key site.key -out site.csr -batch
+  openssl x509 -req -days 365 -in site.csr -signkey site.key -out site.crt
+  cat site.key site.crt >> /etc/certificates/site.pem
+fi
+
+
+if [ -n "$DOMAIN" -a -n "$EMAIL" ]; then
+
+  # Request certificate
+  certbot certonly --standalone \
+    --non-interactive --agree-tos --http-01-port=380 \
+    --email "$EMAIL" \
+    --cert-name "$DOMAIN" \
+    -d "$DOMAIN"
+
+  # Concatenate certificates
+  . /etc/scripts/2-concatenate-cert.sh
+
+fi
+
+# Update certificates in HAProxy
+. /etc/scripts/3-update-haproxy-cert.sh
+