The multi-architecture builds (amd64 + arm64) were taking 15-20+ minutes
due to QEMU emulation for ARM64 cross-compilation. This is too slow for
regular development iteration.
Changes:
- Main branch builds: amd64 only (much faster, ~3-5 minutes)
- Tagged releases: Still build multi-arch (amd64 + arm64)
- Added Docker layer caching to speed up subsequent builds
- Cache stored in registry for persistence across CI runs
The 'latest' tag will be amd64-only from main branch. Users needing
ARM64 should use a specific version tag (e.g., v0.1.0).
Fixed docker buildx errors in CI/CD pipeline:
1. Set DOCKER_TLS_CERTDIR to empty string to disable TLS
(buildx with docker-in-docker doesn't work well with TLS certs)
2. Added fallback to reuse existing builder if creation fails
(docker buildx create ... || docker buildx use ...)
This fixes the error:
'could not create a builder instance with TLS data loaded from environment'
- Change registry from GitLab to Docker Hub (gmcintire/towerops-agent)
- Update authentication to use DOCKERHUB_USERNAME and DOCKERHUB_TOKEN
- Remove vntx runner tags to use GitLab shared runners
