server: docker installer - source .env.default from server/ dir *facepalm*

server/install/install.sh

@@ -48,7 +48,7 @@ git submodule update
 if [[ -f "$INSTALL_DIR/.env" ]]; then
   export $(cat "$INSTALL_DIR/.env" | xargs)
 else 
-  export $(cat ".env.default" | xargs)
+  export $(cat "$TMPFOLDER/server/.env.default" | xargs)
 fi
 
 if [[ ! -d "$PWD/$DATA_DIR" ]]; then