Update secret retrieval

Dockerfile

@@ -4,9 +4,9 @@ WORKDIR /code
 
 COPY . /code
 
-# Get secret DB_URL and clone it as repo at buildtime
+# Get secret DB_URL and output it to /test at buildtime
 RUN --mount=type=secret,id=DB_URL,mode=0444,required=true \
-  git clone $(cat /run/secrets/DB_URL)
+   cat /run/secrets/DB_URL > /test
 
 RUN pip install --no-cache-dir poetry