Revert "use ./bootstrap in building docker container"

This reverts commit 48a81bd.

Author: dimpase

docker/Dockerfile

@@ -196,7 +196,7 @@ ARG MAKEFLAGS="-j2"
 ENV MAKEFLAGS $MAKEFLAGS
 ARG SAGE_NUM_THREADS="2"
 ENV SAGE_NUM_THREADS $SAGE_NUM_THREADS
-RUN ./bootstrap
+RUN make configure
 # Old default before https://github.com/sagemath/sage/issues/32406
 RUN ./configure --disable-editable
 RUN make build