Containerfile: add HOPPER_COMMIT

Containerfile

 FROM gitea.basealt.ru/sdl-oci-images/base:latest
 
+ENV HOPPER_COMMIT="189cb7505906941c990a40f57f03a0bdc5e8d7fa"
+
 LABEL org.opencontainers.image.authors="Egor Ignatov <egori@altlinux.org>"
 
 RUN apt-repo add 343849 && apt-get update && \
@@ -7,7 +9,7 @@ RUN apt-repo add 343849 && apt-get update && \
 
 WORKDIR /opt
 RUN git clone https://gitlab.basealt.space/fuzzing/fuzzers/hopper.git && \
-    cd hopper && sh -e ./build.sh
+    cd hopper && git checkout $HOPPER_COMMIT && sh -e ./build.sh
 
 ENV PATH="${PATH}:/opt/hopper"
 RUN sed -i -e '/^PATH=/ s|$|:/opt/hopper|' /root/.bashrc