Sending build context to Docker daemon  4.608kB
Step 1/5 : FROM openjdk:8
 ---> 81f83aac57d6
Step 2/5 : ADD MemoryCheck.java .
 ---> Using cache
 ---> f781a00077f2
Step 3/5 : WORKDIR .
 ---> Using cache
 ---> 93ec70470697
Step 4/5 : RUN javac MemoryCheck.java
 ---> Using cache
 ---> 94394b3ba860
Step 5/5 : CMD java -showversion MemoryCheck
 ---> Using cache
 ---> 4099cff5e4f5
Successfully built 4099cff5e4f5
Successfully tagged memorycheck8:latest