Revert Port environment variable workaround in Aspire Dashboard images

[lbussell]

Original issue: #5164

The Aspire Dashboard Dockerfiles currently contain a workaround for a port environment variable issue with the Aspire Dashboard:

dotnet-docker/src/aspire-dashboard/8.0/cbl-mariner-distroless/amd64/Dockerfile

Lines 31 to 32 in 02e6fbd

	ASPNETCORE_URLS=http://0.0.0.0:18888 \
	DOTNET_DASHBOARD_OTLP_ENDPOINT_URL=http://0.0.0.0:18889 \

I did not find a tracking issue for this on the Aspire repo but presumably it will be fixed eventually. We want all port/URL environment variables to have the shorthand format:

dotnet-docker/src/runtime-deps/6.0/alpine3.18/amd64/Dockerfile

Line 5 in 32c6a5c

ASPNETCORE_URLS=http://+:80 \

[lbussell]

[Triage] @joperezr, can you make this change when the correct fix is in Aspire? I didn't find a tracking issue for it.

[joperezr]

Yup, will do.

[lbussell]

@joperezr is this fixed in Aspire Dashboard yet? Please link a tracking issue from the Aspire repo.

[JamesNK]

Hi, I don't know of a tracking issue for this in dotnet/aspire, but I'm fixing it here: dotnet/aspire#5941

It should be fixed for Aspire 9.0.

[lbussell]

Fixed in #5980