This is mostly an internal release to ensure that the mise version used in the planning, building, and runtime images are all in sync.

The only user-facing change in this release in bumping the build and runtime mise version to 2026.2.22.

Full Changelog: v0.17.2...v0.18.0

What's Changed

• chore: mise update 2026.1.12 by @iloveitaly in #451
• fix: eliminate additional logs when using --dump-llb by @iloveitaly in #452
• feat(python): Scan nested dependency files in usesDep by @half0wl in #457

New Contributors

• @half0wl made their first contribution in #457

Full Changelog: v0.17.1...v0.17.2

What's Changed

• fix: revert playwright support by @iloveitaly in #447

Full Changelog: v0.17.0...v0.17.1

Providers

New

• Node & Python: We've added automatic Playwright support for Node.js and Python projects. Railpack now detects Playwright dependencies and automatically installs the required system packages and browsers. by @iloveitaly in #348
• Shell: The shell provider now supports a mise install phase, allowing you to define tools to install before your script runs. by @iloveitaly in #433

Fixed

• Node: Consistent Node version resolution is now used when Bun is the package manager. by @iloveitaly in #359
• Node: Trailing whitespace in the packageManager field of package.json is now handled correctly. by @iloveitaly in #432
• Node: Improved detection of version files (like .nvmrc) using Mise's idiomatic parsing. by @iloveitaly in #431
• Python: Builds are now faster for projects using psycopg-binary as unnecessary system dependencies (libpq-dev) are skipped. by @iloveitaly in #379
• Python: .python-version files are now reliably detected in all environments. by @iloveitaly in #378

CLI

Fixed

• Dockerignore: Negation rules (e.g., !file) in .dockerignore now work correctly even if the referenced file does not exist locally. by @iloveitaly in #437
• Config: The provider field is no longer required in railpack.json. by @iloveitaly in #436

Internal improvements to testing, documentation, and refactoring by @iloveitaly and @luojiyin.

Full Changelog: v0.16.0...v0.17.0

Providers

New

• Python: Projects with start.py or bot.py are now automatically detected as Python apps. This simplifies configuration for simple scripts and bots (e.g. Discord bot
  that don't have manifest files. by @coffee-cup in #416

Fixed

• Dotnet: The web server now correctly listens on the port defined by the PORT environment variable. See the updated documentation. by @iloveitaly in #401

CLI

Fixed

• Build: Generated Docker image names are now forced to lowercase to prevent build errors with registries that require lowercase repositories. by @iloveitaly in
  #410

Internal improvements to documentation and build configuration by @iloveitaly, @antonkesy and @Delavalom.

Full Changelog: v0.15.3...v0.15.4

Providers

Fixed

• Dotnet: set aspnet content root to properly find configuration files by @iloveitaly and @Mohs9n in #396
• Erlang: There is an underlying bug in mise that causes the version selection to break. This has been fixed within Railpack and an upstream change has been submitted to mise.

Internal improvements to testing, documentation, and build tooling by @iloveitaly and @salim-b.

Full Changelog: v0.15.2...v0.15.3

What's Changed

• sync mise version between Go code and Dockerfile by @coffee-cup in #394

Full Changelog: v0.15.2...v0.15.3

What's Changed

• update mise veresions by @coffee-cup in #389
• build mise image faster by @coffee-cup in #390
• release build mise for now by @coffee-cup in #391
• install mise from script by @coffee-cup in #392
• fix builder mise location by @coffee-cup in #393

Full Changelog: v0.15.1...v0.15.2

What's Changed

• perf: optimize plan command for large monorepos by @coffee-cup in #382
• fix: deduplicate deploy inputs when using --build-cmd by @coffee-cup in #381

Full Changelog: v0.15.0...v0.15.1

What's Changed

• chore: mise update 2025.11.8 by @iloveitaly in #377
• fix: consider exclude patterns when determining LLB merge eligibility by @coffee-cup in #380

Full Changelog: v0.14.0...v0.15.0