Prepare v0.8.0 Release

Prepare v0.7.2 Release

Prepare v0.7.1 Release

Prepare v0.7.0 Release

Add GitHub Container Registry (#47)

Add the Docker image to the GitHub Container Registry as alternative to
DockerHub and make GHCR the default in the Helm chart.

This commit also adds the `cache-from` and `cache-to` parameters to the
GitHub Action to build the Docker image.

Update Docker Image in Helm Chart

Update Docker Image in Helm Chart

Update Docker Image in Helm Chart

Update Docker Image in Helm Chart

Update Docker Image in Helm Chart