rpki: fix RTR retry loop, stamp version in Docker image, doc fixes

- rpki/rtr: don't send ResetQuery on RTR error code 2 (No Data Available),
  which caused a tight retry loop when the RTR server is still initializing
- Dockerfile: pass BUILD_VERSION build arg to stamp version via ldflags
- docker.yml: pass metadata-action version as BUILD_VERSION
- docs: minor fixes to docker.md, index.md, mkdocs.yml

Dev0212 docker etc. (#30)

* Docker: add multi-arch image, CI/CD, and Docker guide

- Dockerfile: static Go binary on alpine:3.21, Go 1.26 builder
- .dockerignore: excludes test data (rpki.json ~82MB, MRT files) and build artifacts
- .github/workflows/docker.yml: multi-arch build (8 platforms) pushed to ghcr.io on main/tags
- .github/workflows/release.yml: cross-platform release binaries (30+ targets) on tags
- docs/docker.md: Docker quick start, volume mounts, port forwarding, compose examples
- docs/quickstart.md: tabbed install section (Docker / Binary / Go)
- mkdocs.yml: Docker nav entry
- README.md: Docker badge and Docker as first install option


* add SEO meta descriptions to docs

* bump bgpfix to v0.17.2

* Update .github/workflows/release.yml

* fix copilot review: toolchain mismatch, mask build errors

* fix: docker image tags use v-prefix to match git tags

* fix flowspec doc: use RFC 8956 example for IPv6 prefix offset

Merge #29

PR updates bgpipe’s documentation and navigation, bumps the bgpfix dependency, and introduces a configurable stage stop timeout along with lifecycle tests to validate stage start/stop behavior.

Merge #27

* ris-live: better http.Transport settings
* more reliable stage stop

rv-live (#25)

support live data streaming from stream.routeviews.org + a few other improvements

better rv-live + more BMP support

--invalid=ignore -> --invalid=keep

reliability, again (#21)

use bgpfix v0.10.1

Merge dev (#17)

* RIPE RIS Live real-time data streaming
* add -g option that detects ASN byte size (if we don't have the caps)
* use UTC time zone globally