skip docker-secrets if /run/secrets/ is not present

Author: ChristianKniep

init-plain/opt/qnib/entry/10-docker-secrets.env

@@ -2,8 +2,13 @@
 
 ########
 ## Check for /run/secrets and expose them as ENV variables
-for sec in $(ls /run/secrets/);do
-    KEY=$(echo ${sec} |tr '[:lower:]' '[:upper:]' |sed -e 's/-/_/g')
-    declare "$KEY=$(cat /run/secrets/${sec})"
-    export $KEY
-done
+if [ -d /run/secrets/ ];then
+    for sec in $(ls /run/secrets/);do
+        KEY=$(echo ${sec} |tr '[:lower:]' '[:upper:]' |sed -e 's/-/_/g')
+        echo "[II] Set environment variable ${KEY} from '/run/secrets/${sec}'"
+        declare "$KEY=$(cat /run/secrets/${sec})"
+        export $KEY
+    done
+else
+    echo "[II] No /run/secrets directory, skip step"
+fi