Add Let's encrypt addon (#2)

* Add Let's encrypt addon

* fix copy past stuff

* Update README.md

* Update config.json

* Update config.json

* Update README.md

* Update script

* finish first version

* update description

letsencrypt/run.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+set -e
+
+CERT_DIR=/data/letsencrypt
+WORK_DIR=/data/workdir
+CONFIG_PATH=/data/options.json
+
+EMAIL=$(jq --raw-output ".email" $CONFIG_PATH)
+DOMAINS=$(jq --raw-output ".domains[]" $CONFIG_PATH)
+KEYFILE=$(jq --raw-output ".keyfile" $CONFIG_PATH)
+CERTFILE=$(jq --raw-output ".certfile" $CONFIG_PATH)
+
+# setup letsencrypt setup
+if [ ! -f /data/certbot-auto ]; then
+    cd /data
+    curl -O https://dl.eff.org/certbot-auto
+    chmod 775 certbot-auto
+fi
+
+# Start program
+if [ -d $CERT_DIR ]; then
+    /data/certbot-auto renew --non-interactive --config-dir $CERT_DIR --work-dir $WORK_DIR
+else
+    # generate domains
+    while IFS=$'\n' read -r line; do
+        if [ -z "$DOMAIN_ARG" ]; then
+            DOMAIN_ARG="-d $line"
+        else
+            DOMAIN_ARG="$DOMAIN_ARG -d $line"
+        fi
+    done <<< "$DOMAINS"
+
+    /data/certbot-auto certonly --non-interactive --standalone --email $EMAIL --config-dir $CERT_DIR --work-dir "$DOMAIN_ARG"
+fi
+
+# copy certs to store
+cp /data/letsencrypt/live/*/privkey.pem /ssl/KEYFILE
+cp /data/letsencrypt/live/*/fullchain.pem /ssl/CERTFILE