Test most libraries on latest docker tags

Dockerfile.jenkins

@@ -1,5 +1,4 @@
 FROM schemers/chibi:head
 RUN apt-get update && apt-get install -y \
     gcc ca-certificates libffi-dev docker.io make
-ARG timestamp=0
-RUN snow-chibi install --impls=chibi retropikzel.test-r7rs && echo "$timestamp"
+RUN snow-chibi install --impls=chibi retropikzel.test-r7rs

Makefile

@@ -2,7 +2,8 @@
 SCHEME=chibi
 RNRS=r7rs
 LIBRARY=ctrf
-VENV=venv-${SCHEME}-${RNRS}-${LIBRARY}
+DOCKER_TAG=head
+
 AUTHOR=retropikzel
 PKG=${AUTHOR}-${LIBRARY}-${VERSION}.tgz
 tmpdir=.tmp/${SCHEME}/${LIBRARY}
@@ -18,7 +19,19 @@ ifeq "${RNRS}" "r6rs"
 SFX=sps
 endif
 
+ifeq "${SCHEME}" "capyscheme"
 DOCKER_TAG=head
+endif
+ifeq "${SCHEME}" "chibi"
+DOCKER_TAG=head
+endif
+ifeq "${SCHEME}" "chicken"
+DOCKER_TAG=head
+endif
+ifeq "${SCHEME}" "gauche"
+DOCKER_TAG=head
+endif
+
 
 
 all: package