fix: correct config file

setup

@@ -56,6 +56,7 @@ if [ $CONFIG_EXISTS == "false" ] || [ $USE_EXISTING_CONFIG == "n" ]; then
 
     rm -f config
     touch config
+    echo "TYPO3_IMAGE="$TYPO3_IMAGE >> config
     echo "TYPO3_VERSION="$TYPO3_VERSION >> config
     echo "TYPO3_HOST_IP_ADDRESS="$TYPO3_HOST_IP_ADDRESS >> config
     echo "TYPO3_HOST_PORT="$TYPO3_HOST_PORT >> config