Add optional env vars config option

DOCS.md

@@ -115,6 +115,15 @@ Once you have Grafana up and running, you'll need to configure a data source to
 
 - `import_dir`: (Optional) The path to the directory where TeslaMate should look for the TeslaMate export CSV file. Default: `/share/teslamate`.
 
+- `env_vars`: (Optional) Set additional environment variables for TeslaMate which aren't currently exposed by the configuration options in this add-on.
+
+  Each entry is made up of a name and value:
+
+  - `name`: The case-sensitive environment variable name.
+  - `value`: The value to be set in the environment variable.
+
+  Note: These will also overwrite any environment variable set using the configuration options above.
+
 ## Data Import from TeslaFi
 
 It is now possible to import CSV data from TeslaFi, refer to the [official docs][teslafi-import].

config.json

@@ -36,7 +36,8 @@
         "timezone": "Europe/London",
         "import_dir": "/share/teslamate",
         "default_geofence": "",
-        "encryption_key": ""
+        "encryption_key": "",
+        "env_vars": []
     },
     "schema": {
         "database_user": "str",
@@ -61,7 +62,11 @@
         "timezone": "str",
         "import_dir": "str",
         "default_geofence": "str?",
-        "encryption_key": "password?"
+        "encryption_key": "password?",
+        "env_vars": [{
+            "name": "str?",
+            "value": "str?"
+        }]
     },
     "map": [
         "share:rw"

services/teslamate/run

@@ -44,6 +44,14 @@ export DATABASE_HOST DATABASE_NAME DATABASE_PASS DATABASE_PORT DATABASE_USER \
   DISABLE_MQTT MQTT_HOST MQTT_NAMESPACE MQTT_PASSWORD MQTT_TLS_ACCEPT_INVALID_CERTS \
   MQTT_TLS MQTT_USERNAME IMPORT_DIR PORT TZ DEFAULT_GEOFENCE ENCRYPTION_KEY URL_PATH
 
+# These are optional and applied last so we can override those set above if needed.
+for env_var in $(bashio::config 'env_vars|keys'); do
+    name=$(bashio::config "env_vars[${env_var}].name")
+    value=$(bashio::config "env_vars[${env_var}].value")
+    bashio::log.debug "Setting Env Variable ${name} to ${value}"
+    export "${name}=${value}"
+done
+
 # Import dashboards
 if bashio::config.true 'grafana_import_dashboards'; then
     /dashboards.sh restore

translations/en.yaml

@@ -67,3 +67,6 @@ configuration:
   import_dir:
     name: TeslaFi Import Directory
     description: The directory which holds the TeslaFi export you would like to import into TeslaMate.
+  env_vars:
+    name: Environment Variables
+    description: Set additional environment variables for TeslaMate which aren't currently exposed by the configuration options in this add-on.