All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

All container images published from this repository share the repository version. The legacy per-image version numbers from the archived pre-monorepo repositories (ada 2.2.3, ada-system 2.2.3, cpp 1.1.2, cpp-system 1.1.2, go 1.1.0, rust 1.0.2) are retired.

Cosmetic cleanup following deletion of the archived pre-monorepo repositories. No runtime behavior changes in any image.

• CHANGELOG.md: drop dead hyperlinks to the retired repositories in the Previous History subsection of 1.0.0; keep the historical names as plain-text references for context.
• Dockerfile headers (6 files): # Repository: dev_container_<lang> updated to # Repository: dev_containers.
• Per-language Makefiles (4 files): wrapper comment and PROJECT_NAME updated to reference dev_containers. PROJECT_NAME only affects make archive tarball naming; image names are unchanged.
• Hello-world examples (4 files): stdout string updated from Hello from <Lang> in dev_container_<lang>! to Hello from <Lang> in dev_containers!.
• ada/examples/hello_ada/alire.toml: website URL updated to https://github.com/abitofhelp/dev_containers.

First unified release of the consolidated dev containers monorepo. All six container images (dev-container-ada, dev-container-ada-system, dev-container-cpp, dev-container-cpp-system, dev-container-go, dev-container-rust) ship at version 1.0.0.

• Monorepo consolidating four dev container projects: Ada, C++, Go, Rust.
• Shared entrypoint.sh for runtime-adaptive user identity.
• Shared Makefile.common with auto-detected container CLI (macOS/Windows -> docker, Linux -> nerdctl).
• Sequential container naming via container_run.py shared launcher (e.g., dev-container-ada-1, -2, -3).
• Podman rootless support with --userns=keep-id.
• Linux host prerequisites: AppArmor userns fix, rootless containerd install, loginctl linger, XDG_RUNTIME_DIR detection.
• Unified README.md, USER_GUIDE.md, and CHANGELOG.md.
• Matrix GitHub Actions for build and publish across all images.
• workflow_dispatch trigger on docker-build.yml for manual reruns.
• Reproducibility Policy section in README.md documenting version-pinning requirements for tools installed in Dockerfiles.
• SHA256 verification for Typst, Bazelisk, Buf, golangci-lint, and cargo-binstall downloads.
• TYPST_SHA256_AMD64 / TYPST_SHA256_ARM64 build args; Typst install is now architecture-aware across all arm64-capable images (previously downloaded the x86_64 binary unconditionally).
• release.yml GitHub Actions workflow that creates a GitHub Release from CHANGELOG.md on v* tag push.

• Pinned go install tool versions (gopls v0.21.1, delve v1.26.1, staticcheck 2026.1, protoc-gen-go v1.36.11, protoc-gen-go-grpc v1.6.1) in go/Dockerfile; previously installed from @latest.
• Replaced curl | sh installer for golangci-lint with a SHA256-verified tarball download pinned to v2.11.4.
• Pinned Rust toolchain to 1.95.0 in rust/Dockerfile; previously followed the stable channel.
• Replaced curl | bash installer for cargo-binstall with a SHA256-verified tarball pinned to v1.18.1.
• Pinned cargo-installed tools: probe-rs-tools 0.31.0, cargo-generate 0.23.8, cargo-expand 1.0.121, sccache 0.14.0.
• Pinned vcpkg to tagged release 2026.03.18 in cpp/Dockerfile; previously cloned HEAD of the default branch.
• Pinned pytest to 9.0.3 across all six Dockerfiles; previously installed the latest version on the PyPI index at build time.

• Ada smoke test (CI and Makefile TEST_SCRIPT / TEST_SCRIPT_SYSTEM) now uses alr run instead of invoking gprbuild -P directly. gprbuild -P fails on a fresh clone because the Alire-generated config/hello_ada_config.gpr has not yet been created.

The pre-monorepo per-language repositories (dev_container_ada, dev_container_cpp, dev_container_go, dev_container_rust) have been retired and deleted. Their histories were consolidated into this repository's commit stream at the time of the monorepo migration.