diff --git a/.woodpecker.yml b/.woodpecker.yml
index 972ceee..ffa58be 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -9,6 +9,7 @@ pipeline:
     build_args:
     - ALPINE_VERSION=${ALPINE_VERSION}
     - BASE_IMAGE=registry.nulo.in/sutty/containers-sdk-ruby
+    cache_from: registry.nulo.in/sutty/containers-gem-compiler
     username: sutty
     secrets:
     - docker_password
diff --git a/bulk-compiler.sh b/bulk-compiler.sh
index d953b17..a2f5478 100755
--- a/bulk-compiler.sh
+++ b/bulk-compiler.sh
@@ -8,14 +8,20 @@ test -n "${PLATFORM}"
 
 install -dm 755 -o builder -g builder cache gems
 
-find build/ -type f |
-  sed -re "s|^build/([^/]+)/(.*)|&\tbuilt/${ALPINE_VERSION}/\1/\2\t\1\t\2|" |
-  while read BUILD BUILT GEM_NAME GEM_VERSION; do
-    test -f "${BUILT}" && continue
+echo "1..$(find build/ -type f | grep -v /.keep | wc -l)"
 
-    FAILED="failed/${ALPINE_VERSION}/${GEM_NAME}/${GEM_VERSION}"
+find build/ -type f | grep -v /.keep | nl |
+  sed -re "s|\tbuild/([^/]+)/(.*)|&\tbuilt/${ALPINE_VERSION}/\1/\2\tfailed/${ALPINE_VERSION}/\1/\2\t\1\t\2|" |
+  while read NUMBER BUILD BUILT FAILED GEM_NAME GEM_VERSION; do
+    if test -f "${BUILT}" ; then
+      echo "ok ${NUMBER} - ${GEM_NAME} ${GEM_VERSION} already built, skipping"
+      continue
+    fi
 
-    test -f "${FAILED}" && continue
+    if test -f "${FAILED}" ; then
+      echo "not ok ${NUMBER} - ${GEM_NAME} ${GEM_VERSION} failed previously"
+      continue
+    fi
 
     unset EXTRA_PKGS EXTRA_GEMS GEM_COMPILER_FLAGS
 
@@ -36,6 +42,7 @@ find build/ -type f |
 
     if test $? -ne 0 ; then
       BUILT="${FAILED}"
+      echo "not ok ${NUMBER} - ${GEM_NAME} ${GEM_VERSION} build failed"
     fi
 
     set -e