Add gRPC reverse proxy server example

[eottabom]

Motivation:

Add gRPC reverse proxy server example

Modifications:

Add gRPC reverse proxy server example with testcontainers.

Result:

• Closes #2353 .

[CLAassistant]

All committers have signed the CLA.

[github-actions[bot]]

🔍 Build Scan® (commit: 0c8ecb410a9b4548ec4924af83d7763ac7383d8c)

Job name	Status	Build Scan®
build-windows-latest-jdk-21	✅	https://ge.armeria.dev/s/cl6pxeh6pzi2a
build-self-hosted-unsafe-jdk-8	✅	https://ge.armeria.dev/s/r2gsxbrrvhw2c
build-self-hosted-unsafe-jdk-21-snapshot-blockhound	✅	https://ge.armeria.dev/s/l3wmgpewtgzh2
build-self-hosted-unsafe-jdk-17-min-java-17-coverage	✅	https://ge.armeria.dev/s/sf4jpb56eq4ec
build-self-hosted-unsafe-jdk-17-min-java-11	✅	https://ge.armeria.dev/s/senoeher2ztfm
build-self-hosted-unsafe-jdk-17-leak	✅	https://ge.armeria.dev/s/ovnvnpjdy3kx4
build-self-hosted-unsafe-jdk-11	✅	https://ge.armeria.dev/s/s6keqs42qlb5e
build-macos-12-jdk-21	❌ (failure)	https://ge.armeria.dev/s/bvai7u6u62aqc

[trustin]

Could you check the build failures and make sure the tests are not flaky?

[eottabom]

It does not appear to be a problem caused by overlapping ports. Let me find the cause again.

[eottabom]

build-self-hosted-unsafe-jdk-21-snapshot-blockhound

I don't think there's a docker on the ci server

java.util.concurrent.CompletionException: java.lang.IllegalStateException: Could not find a valid Docker environment. Please see logs and check configuration

[jrhee17]

Pushed some small commits 🙇 Let me know if any changes don't make sense

[eottabom]

Looks great, thanks! Could you also run this script to see if everything works correctly? https://github.com/line/armeria-examples/blob/main/update-examples.sh You might run this command: (I supposed armeria and armeria-examples are in the same parent directory) ./update-examples.sh 1.29.0 ../armeria

This script is not working properly.

The following error occurs Is there a dependency I need to add?

[minwoox]

This script is not working properly.

Let me see what happened. 😉

[minwoox]

Let me see what happened. 😉

It works correctly. The problem was just that we needed to convert the libs.testcontainers.junit.jupiter to the actual names in the script like: -pe "s/libs.testcontainers.junit.jupiter/'org.testcontainers:junit-jupiter:$TESTCONTAINER_VERSION'/g;" \

It will be handled when we release the next version so you don't have to worry about it. 😉

[eottabom]

Rather, I think learned a lot. Thank you. 😄