Test multiple layers

Author: satackey

test_project/Dockerfile

@@ -1,5 +1,20 @@
 FROM alpine AS data
-RUN date > /now.txt
+RUN date > /now1.txt
+RUN date > /now2.txt
+RUN date > /now3.txt
+RUN date > /now4.txt
+RUN date > /now5.txt
+RUN date > /now6.txt
+RUN date > /now7.txt
+RUN date > /now8.txt
+RUN date > /now9.txt
+RUN date > /now10.txt
+RUN date > /now11.txt
+RUN date > /now12.txt
+RUN date > /now13.txt
+RUN date > /now14.txt
+RUN date > /now15.txt
+RUN date > /now16.txt
 
 FROM scratch
-COPY --from=data /now.txt /data_stage_built_at.txt
+COPY --from=data /now16.txt /data_stage_built_at.txt