chore(deps): update glanceapp/glance docker tag to v0.8.4

[renovate]

This PR contains the following updates:

Package	Update	Change
glanceapp/glance	patch	v0.8.3 -> v0.8.4

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[wanghe-fit2cloud]

The code difference is the upgrade from glanceapp/glance:v0.8.3 to glanceapp/glance:v0.8.4. This change should update you to the latest stable version of Glance.

No significant issues or optimizations are noted based on this single line. The configuration looks standard for an updated Docker image with appropriate labels and network settings. Ensure that all other configurations remain unchanged and compatible with the new Glance version.

[wanghe-fit2cloud]

The given code difference shows an update from version v0.8.3 to v0.8.4 of the glance service within a Docker file template for services. There are no apparent issues or specific optimizations suggested in this change alone, assuming that both images exist and behave similarly regarding their functionality and dependencies. The changes only reflect a minor upgrade from one patch release to another without altering the overall configuration significantly.

[wanghe-fit2cloud]

There is no significant issue with the code snippet provided. The change from glanceapp/glance:v0.8.3 to glanceapp/glance:v0.8.4 appears to be an update to access a newer version of Glance, which could improve performance or include new features. However, this alone does not introduce any bugs or require optimization.

Here are some general guidelines on improving Dockerfile configurations and service management:

1. Environment Variables: Use environment variables instead of hardcoding sensitive information in the Dockerfile or deployment scripts. This makes it easier to manage configuration without modifying the source code.

2. Dependency Management: Ensure all dependencies are specified explicitly in the Dockerfile (RUN apt-get install -y <package>) rather than relying on default package installations.

3. Use Best Practices: Follow common best practices such as using multi-stage builds for reducing image size and maintaining clean images.

4. Logging and Monitoring: Implement proper logging within Docker containers for easier debugging and monitoring. Consider using tools like Fluentd or Logstash.

5. Container Isolation and Security: Configure the container to run with minimal privileges to prevent security vulnerabilities. This includes setting appropriate file permissions and network isolation using Docker networking options like user namespaces or bridge mode.

6. Health Checks: Implement health checks in your application to ensure that each component remains operational and ready to serve requests.

7. Resource Limitations: Set explicit resource limits (CPU/memory) for containers based on their role to optimize system usage and avoid out-of-memory errors or excessive CPU load.

By addressing these areas, you can create more robust and efficient Docker environments.