Add support for config file snippet #401 (#406)

README.md

@@ -295,10 +295,23 @@ Volume|Description
 :---|:---
 /uprcl/confdir|Uprcl configuration directory
 /uprcl/mediadirs|Uprcl media directories
-/user/config|Location for additional files. Currently: `additional-radio-list.txt` and `recoll.conf.user` as well as credentials for qobuz on `qobuz.txt`, for hra on `hra.txt`. The credentials file format is the same as a `.env` file. Ensure to include all the settings related the streaming service.
+/user/config|Location for additional files. See [User Config Volume](#user-config-volume) for details.
 /cache|Runtime information for upmpdcli. Attach a volume to this path in order to maintain consistency across restarts.
 /log|Location for the upmpdcli log file. Enabled using `LOG_ENABLE`
 
+#### User Config Volume
+
+FILE|DESCRIPTION
+:---|:---
+additional-radio-list.txt|Additional Radios
+recoll.conf.user|Recoll configuration (used by upcrl)
+qobuz.txt|Qobuz Credentials
+hra.txt|HRA Credentials, format is like a .env file. Make sure you include all the settings related the streaming service.
+upmpdcli-additional.txt|Configuration snippet, will be appended to upmpdcli.conf.
+
+For `qobuz.txt` and `hra.txt`, the format of the file must be like a `.env` file, where all the settings which are related to the service must be listed. Mixed configurations (so part in variables, part in these files) are not supported.  
+The upmpdcli-additional.txt is a simple list of lines with a `key = value` synthax.
+
 ### Custom icon
 
 It is possible to customize the server icon by mounting a local png file to the container file `/usr/share/upmpdcli/icon.png`. Just put a suitable png file in the same directory of the compose file, then, assuming the icon is called `my-icon.png`, you would want to add an entry to the volumes section, similar to this:

app/bin/run-upmpdcli.sh

@@ -107,6 +107,8 @@ CONFIG_FILE=/tmp/current-upmpdcli.conf
 QOBUZ_CREDENTIALS_FILE=/user/config/qobuz.txt
 HRA_CREDENTIALS_FILE=/user/config/hra.txt
 
+UPMPDCLI_ADDITIONAL_FILE=/user/config/upmpdcli-additional.txt
+
 declare -A file_dict
 
 source read-file.sh
@@ -745,6 +747,12 @@ else
 fi
 sed -i 's\LOG_DIRECTORY\'"$log_directory"'\g' $CONFIG_FILE
 
+if [ -f $UPMPDCLI_ADDITIONAL_FILE ]; then
+    echo "File [$UPMPDCLI_ADDITIONAL_FILE] is available, appending to [$CONFIG_FILE] ..."
+    cat $UPMPDCLI_ADDITIONAL_FILE >> $CONFIG_FILE
+    sed -i -e '$a\' $CONFIG_FILE
+    echo "Done."
+fi
 
 cat $CONFIG_FILE
 

doc/change-history.md

@@ -2,6 +2,7 @@
 
 Change Date|Major Changes
 ---|---
+2024-05-10|Support for config file snippet (see issue [#401](https://github.com/GioF71/upmpdcli-docker/issues/401))
 2024-05-01|Support for `subsonictitle` (see issue [#398](https://github.com/GioF71/upmpdcli-docker/issues/398))
 2024-04-24|Update to Upmpdcli version 1.8.10 (see issue [#393](https://github.com/GioF71/upmpdcli-docker/issues/393))
 2024-03-27|Fix executable shell files for user mode (see issue [#390](https://github.com/GioF71/upmpdcli-docker/issues/390)))