railwayapp/railpack v0.43.0 on GitHub

Breaking Changes

Default build excludes: Projects without a .dockerignore or configured excludes now omit node_modules (Node, Deno) and venv/.venv (Python) from the build context. (#670)

Generate: Node, Deno, and Python projects without a .dockerignore or configured excludes now get sensible default exclude patterns (node_modules for Node and Deno, venv and .venv for Python) to keep dependencies out of the build context. Your own .dockerignore or exclude config still takes precedence — add one to customize the defaults. by @iloveitaly in #670
Ruby: Ruby versions declared in your Gemfile are now resolved by mise natively instead of railpack's own parsing, and falling back to the Gemfile.lock RUBY VERSION is deprecated with a warning linking to the docs. If you relied on the lockfile version alone, pin Ruby explicitly via .ruby-version, mise.toml, or your Gemfile — see Ruby version resolution for the precedence order. by @iloveitaly in #791

.NET: The start command now uses <AssemblyName> from the .csproj when set, so apps with a custom assembly name start the correct executable. by @Tyagiquamar in #803
.NET: Assembly-name handling now covers multiple and conditional <AssemblyName> property groups (last one wins, matching MSBuild) and falls back to the project file name for unevaluatable $(...) expressions. See the .NET docs for how the start command picks the executable name. by @RaphaelFakhri in #802
Procfile: Procfiles are now parsed line by line instead of as YAML, so commands containing : or starting with quotes no longer fail plan generation, and multi-process Procfiles without web or worker now fall back to the first process deterministically. by @RaphaelFakhri in #766

Updated mise from v2026.10.8 to v2026.10.14.

Faster installs, fewer GitHub API calls: Public GitHub metadata now resolves via mise-versions, speeding up installs and avoiding anonymous API rate limits in builds without a token. (v2026.10.11)
Resilient version lookups: GitHub metadata lookups now retry against api.github.com when mise-versions times out or errors, making tool installs more reliable. (v2026.10.12)
Untrusted project settings ignored: [settings] in a project's mise.toml that can redirect downloads or builds now apply only after trust, closing a supply-chain vector. (v2026.10.13)
Strict tool-option checks: Installs now fail when a tool declares an option its backend doesn't read, so typos surface as errors instead of being silently ignored. (v2026.10.14)

Full Changelog: v0.42.0...v0.43.0

Internal improvements to CI automation, integration testing, and agent skills by @iloveitaly.