Change to using environment variables in favor of CLI args.

This also adds the DB encryption guards found in the Duplicati Docker file.
This fixes linuxserver#81

Dockerfile

@@ -12,7 +12,13 @@ LABEL maintainer="aptalca"
 # environment settings
 ARG DEBIAN_FRONTEND="noninteractive"
 ENV HOME="/config" \
-  TMPDIR=/run/duplicati-temp
+  TMPDIR=/run/duplicati-temp \
+  DUPLICATI__SERVER_DATAFOLDER=/config \
+  DUPLICATI__WEBSERVICE_PORT=8200 \
+  DUPLICATI__WEBSERVICE_INTERFACE=any \
+  DUPLICATI__WEBSERVICE_ALLOWED_HOSTNAMES=* \
+  DUPLICATI__DISABLE_DB_ENCRYPTION=true \
+  DUPLICATI__REQUIRE_DB_ENCRYPTION_KEY=true
 
 RUN \
   echo "**** install packages ****" && \

root/etc/s6-overlay/s6-rc.d/svc-duplicati/run

@@ -3,5 +3,4 @@
 
 exec \
     s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z localhost 8200" \
-        cd /app/duplicati s6-setuidgid abc ./duplicati-server \
-        --webservice-interface=any --server-datafolder=/config --webservice-allowed-hostnames=* $CLI_ARGS
+        cd /app/duplicati s6-setuidgid abc ./duplicati-server $CLI_ARGS