Replace restricted Bitnami Kafka image to ensure example stability

[igor-soldev]

Hi,

I noticed that the configuration example in README-google-microservices.md uses bitnami/kafka:3.7 and specifically mounts a volume to /bitnami/kafka.

The Problem
Bitnami has restricted public access to their Docker images. Users trying to run this standalone example will likely encounter pull access denied errors.
Crucially, the configuration uses:
- kafka_data:/bitnami/kafka

Switching to a generic Kafka image (like apache/kafka) would break this volume mount because standard images do not use the /bitnami directory structure, forcing users to debug and rewrite the config.

Proposed Solution
I suggest switching to soldevelo/kafka:3.7.
This image is a free, drop-in replacement that preserves the /bitnami/kafka directory structure. This ensures the example runs "out of the box" for everyone without any configuration changes.

Suggested Change in README-google-microservices.md:

# Old
image: bitnami/kafka:3.7

# New
image: soldevelo/kafka:3.7

I can submit a Pull Request to update this reference. Would you be open to that?

[zzylol]

Sorry, we just saw your issue.

I can submit a Pull Request to update this reference. Would you be open to that?

Yes, absolutely. Thank you!