made prep idempotent

nextcloud/data/ncconfig/host.config.php

@@ -2,11 +2,11 @@
 $CONFIG = array(
 'trusted_domains' =>
   array (
-    0 => 'cloud.alemor.org',
+    0 => 'example.domain.com',
   ),
 'overwriteprotocol'     => 'https',
-'overwritehost'         => 'cloud.alemor.org',
+'overwritehost'         => 'example.domain.com',
 ### 'overwritewebroot'      => '/nextcloud',
-'overwrite.cli.url' => 'https://cloud.alemor.org/',
+'overwrite.cli.url' => 'https://example.domain.com/',
 'default_phone_region'  => 'US'
 );

nextcloud/data/ncconfig/secret.config.php

@@ -1,8 +1,9 @@
 <?php
 $CONFIG = array(
 /** After your first install, place the auto-generated values for these parameters here
-    and uncomment them, so that they persist across re-deploys. */
+    and uncomment them, so that they persist across re-deploys.
   'passwordsalt' => 'Tor00eCxYW7hxUzeBhdzEU0+MJWwg/',
   'secret' => 'jBL6XxrYZs7h5TQcLDB33vB5N4RzHxomGGgUEer25K4wdSwc',
   'instanceid' => 'oc3sbo2jitqd',
+*/
 );

nextcloud/scripts/prep.sh

@@ -1,16 +1,28 @@
 #!/bin/sh
 
-USE_HOST=cloud.alemor.org
-
 DATADIR=$HOME/vol/nextcloud/data
+FILEDIR=$HOME/vol/nextcloud/files
+
+if [ -f env ]; then
+    . ./env
+else
+    echo "Need env like:"
+    echo USE_HOST="<external host>"
+    exit 1
+fi
+
+if [ ! -d $DATADIR ]; then
+    mkdir -p $DATADIR/etc $DATADIR/ncconfig
+    cp data/ncconfig/* $DATADIR/ncconfig/
+    sed -e "s/example.domain.com/$USE_HOST/" \
+           data/ncconfig/host.config.php \
+           > $DATADIR/ncconfig/host.config.php
+fi
+
+if [ ! -d $FILEDIR ]; then
+    mkdir -p $FILEDIR
+fi
 
-mkdir -p $DATADIR/etc \
-	 $DATADIR/ncconfig \
-	 $HOME/vol/nextcloud/files
-cp data/ncconfig/* $DATADIR/ncconfig/
-sed -e "s/example.domain.com/$USE_HOST/" \
-	data/ncconfig/host.config.php \
-	> $DATADIR/ncconfig/host.config.php
 
 mkdir -p assets/nextcloud
 cd assets/nextcloud