Axum docker build action

[ChristianPavilonis]

Updates Cargo.toml to use https:// instead of ssh for public edgezero repo and adds docker build

[aram356]

Good start but need small tweaks

[ChristianPavilonis]

All review comments addressed:

1. .cargo/config.toml.local - Restored
2. Dockerfile Rust version sync with .tool-versions:
   • Dockerfile:1-2 - ARG RUST_VERSION with parameterized FROM
   • .github/workflows/docker.yml:30-32 - Reads version from .tool-versions
   • .github/workflows/docker.yml:65 - Passes as build-arg
3. Release trigger with tag_name:
   • .github/workflows/docker.yml:4-5 - release trigger
   • .github/workflows/docker.yml:47 - Uses github.event.release.tag_name
4. Removed custom tag input:
   • .github/workflows/docker.yml:6-11 - Only ref input for workflow_dispatch
   • .github/workflows/docker.yml:48 - Uses ref/branch name for manual dispatch tags
5. Concurrency group:
   • .github/workflows/docker.yml:18 - Uses release.tag_name || run_id

[aram356]

👍 Looks good