Property for MAX_HEAP is always invalid

[FrankR85]

Expected behavior: dbms.memory.heap.max_size=31g in neo4j.conf sets the maximum heap size.

Actual behavior:

FROM neo4j:4.1.1
COPY neo4j.conf /var/lib/neo4j/conf/neo4j.conf

results in an error when starting the image:

Starting Neo4j.
Invalid maximum heap size: -Xmx31g
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

The same situation is with initial heap size. No matter what exact value is given.

[jennyowen]

Sorry for the delay in replying. I tried reproducing this from your code but I didn't get the error.
I was using a conf file that only contains the line dbms.memory.heap.max_size=10g. If you try the same does it still give you an error about max heap size?