Add turn_secret via entrypoint

entrypoint.coturn.sh

@@ -2,6 +2,7 @@
 set -e
 apk add jq su-exec
 
+# create certs for proxy
 if [ "$ENABLE_HTTPS_PROXY" == true ]; then
 
   while [ ! -f /etc/resty-auto-ssl/storage/file/*latest ]
@@ -24,16 +25,20 @@ if [ ! -f /tmp/cert.pem ] || [ ! -f /tmp/key.pem ]; then
   exit 1
 fi
 
-
-# If command starts with an option, prepend with turnserver binary.
-#if [ "${1:0:1}" == '-' ]; then
-#  set -- turnserver "$@"
-#fi
-
-#su-exec nobody $(eval "echo $@")
-
-# get turn_secret
-
+# set turn_secret variable
+if test -f "/run/secrets/turn_secret"; then
+    pwd=`cat /run/secrets/turn_secret`
+    if [ -z $pwd ]; then
+        echo >&2 "error: /run/secrets/turn_secret is empty"
+        exit 1
+    fi
+    echo "entrypoint.coturn.sh setting TURN_SECRET"
+    export "TURN_SECRET"="${pwd}"
+    unset "pwd"
+else
+    echo >&2 "error: /run/secrets/turn_secret does not exist"
+    exit 1
+fi
 
 # start turnserver
 su-exec nobody turnserver --static-auth-secret=${TURN_SECRET}"