Containers misnamed upon flash with build.sh

[mgeeIOL]

Describe the bug

Upon using the build.sh script to flash Ocre runtime and a .wasm file to the b_u585i_iot02a board the container is named "Hello World" regardless of container used.

How to reproduce

Command used:
./build.sh -t z -r -b uw -f .../modbus-server.wasm

Once the board is flashed, ran ocre ls and got the following output:

Expected behavior

For the ocre runtime to display an appropriate container name for the function of the container when running ocre ls.

[kr-t]

Issue: Currently the name is hardcoded into the main.c
Possible implementation solution: we can create a C Macro out of the filename and pass it during the build, which we then use as a container name instead of hardcoded "Hello World".
This can be a good first issue.