$ docker run --rm --memory=256m --entrypoint java flags-demo:jdk25 \
    -XX:-UseContainerSupport -XX:+PrintFlagsFinal -version | grep -E "MaxHeapSize|UseContainerSupport"
$ docker run --rm --memory=256m --entrypoint java flags-demo:jdk25 \
    -Xlog:gc -XX:-UseContainerSupport -cp /memoryhog.jar MemoryHog 24 200

--- what the flag alone resolves heap to ---
   size_t MaxHeapSize                              = 2105540608                                {product} {ergonomic}
   size_t SoftMaxHeapSize                          = 2105540608                             {manageable} {ergonomic}
     bool UseContainerSupport                      = false                                     {product} {command line}

--- the hog run ---
[0.004s][info][gc] Using G1
MemoryHog starting: chunk=24MB sleep=200ms
held=24MB heapUsed=26MB heapMax=2008MB freeHeap=101MB
held=48MB heapUsed=52MB heapMax=2008MB freeHeap=75MB
[0.515s][info][gc] GC(0) Pause Young (Concurrent Start) (G1 Humongous Allocation) 52M->51M(128M) 1.445ms
[0.515s][info][gc] GC(1) Concurrent Undo Cycle
[0.515s][info][gc] GC(1) Concurrent Undo Cycle 0.084ms
held=72MB heapUsed=76MB heapMax=2008MB freeHeap=51MB
[0.731s][info][gc] GC(2) Pause Young (Concurrent Start) (G1 Humongous Allocation) 76M->76M(128M) 1.569ms
[0.732s][info][gc] GC(3) Concurrent Mark Cycle
[0.748s][info][gc] GC(3) Pause Remark 101M->101M(172M) 0.580ms
[0.749s][info][gc] GC(3) Pause Cleanup 101M->101M(172M) 0.018ms
held=96MB heapUsed=101MB heapMax=2008MB freeHeap=70MB
[0.751s][info][gc] GC(3) Concurrent Mark Cycle 19.274ms
held=120MB heapUsed=126MB heapMax=2008MB freeHeap=45MB
held=144MB heapUsed=151MB heapMax=2008MB freeHeap=45MB
held=168MB heapUsed=176MB heapMax=2008MB freeHeap=45MB
held=192MB heapUsed=201MB heapMax=2008MB freeHeap=45MB
held=216MB heapUsed=226MB heapMax=2008MB freeHeap=45MB
container exit code: 137