Use image password with fedwiki

src/freedombone-app-fedwiki

@@ -553,8 +553,12 @@ function install_fedwiki {
 
     FEDWIKI_ONION_HOSTNAME=$(add_onion_service fedwiki 80 ${FEDWIKI_ONION_PORT})
 
-    if [ ! $FEDWIKI_COOKIE ]; then
-        FEDWIKI_COOKIE="$(create_password 20)"
+    if [ -f "$IMAGE_PASSWORD_FILE" ]; then
+        FEDWIKI_COOKIE="$(printf "%s" "$(cat "$IMAGE_PASSWORD_FILE")")"
+    else
+        if [ ! "$FEDWIKI_COOKIE" ]; then
+            FEDWIKI_COOKIE="$(create_password 20)"
+        fi
     fi
 
     cp -r /root/.npm-global/lib/node_modules/wiki /var/lib