Fixing tests

Dockerfile.jenkins

@@ -1,5 +1,7 @@
-FROM alpine
-RUN apk add make docker git
-RUN git clone https://codeberg.org/retropikzel/test-r7rs.git --depth=1
-RUN cd test-r7rs && ./configure && make && make install
-COPY --from=schemers/chibi:alpine-head /usr/local /usr/local
+FROM debian:trixie
+RUN apt-get update && apt-get install -y \
+    make gcc git ca-certificates libffi-dev docker.io git
+RUN git clone https://github.com/ashinn/chibi-scheme.git
+WORKDIR /chibi-scheme
+RUN make && make install
+RUN snow-chibi install --impls=chibi retropikzel.test-r7rs