public Builder setCreationTime(Instant creationTime) {
      this.creationTime = creationTime;
      return this;
    }
Sets the container image creation time. The default is {@link Instant#EPOCH}.

@param creationTime the container image creation time
@return this
jib-build-plan/src/main/java/com/google/cloud/tools/jib/api/buildplan/ContainerBuildPlan.java