feat(image): add bun tooling

Install pinned Bun v1.3.14 alongside Node.js so the runner image
provides a JS runtime, package manager, bundler, and test runner out
of the box. Adds the BUN_VERSION build arg, a Renovate custom manager
keyed to Bun's `bun-v` tag prefix, the `unzip` apt dependency needed
to extract the release asset, and README documentation.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: miragecentury

Containerfile

@@ -18,6 +18,7 @@ RUN apt-get update \
        python3.12 python3.12-dev \
        python3.13 python3.13-dev \
        skopeo buildah \
+       unzip \
     && apt-get autoremove -y \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
@@ -115,6 +116,16 @@ RUN curl -sSL -o /tmp/node.tgz \
     && tar -xzf /tmp/node.tgz -C /usr/local --strip-components=1 \
     && rm -f /tmp/node.tgz
 
+# Install Bun (JS runtime, package manager, bundler, test runner)
+ARG BUN_VERSION=1.3.14
+RUN curl -sSL -o /tmp/bun.zip \
+      "https://github.com/oven-sh/bun/releases/download/bun-v${BUN_VERSION}/bun-linux-x64.zip" \
+    && unzip -q /tmp/bun.zip -d /tmp \
+    && mv /tmp/bun-linux-x64/bun /usr/local/bin/bun \
+    && chmod +x /usr/local/bin/bun \
+    && ln -sf /usr/local/bin/bun /usr/local/bin/bunx \
+    && rm -rf /tmp/bun.zip /tmp/bun-linux-x64
+
 # Install pre-commit
 # hadolint ignore=DL3013
 RUN pip3 install --no-cache-dir pre-commit

README.md

@@ -25,6 +25,7 @@ Container image based on the [GitHub Actions Runner](https://github.com/actions/
 | [pack](https://github.com/buildpacks/pack) | Cloud Native Buildpacks CLI |
 | [skopeo](https://github.com/containers/skopeo) | Container image registry operations |
 | [Node.js](https://nodejs.org/) / npm | JavaScript runtime and package manager (npm/npx bundled) |
+| [Bun](https://bun.sh/) | JavaScript runtime, package manager, bundler, and test runner |
 
 ### Build pipeline tools
 
@@ -114,6 +115,7 @@ build:
     - HADOLINT_VERSION=2.14.0
     - YQ_VERSION=4.53.2
     - NODE_VERSION=24.16.0
+    - BUN_VERSION=1.3.14
   labels:
     - org.opencontainers.image.source=https://github.com/deerhide/python-github-runner
     - org.opencontainers.image.description="Python GitHub Runner"

manifest.yaml

@@ -15,6 +15,7 @@ build:
     - HADOLINT_VERSION=2.14.0
     - YQ_VERSION=4.53.2
     - NODE_VERSION=24.16.0
+    - BUN_VERSION=1.3.14
   labels:
     - org.opencontainers.image.source=https://github.com/deerhide/python-github-runner
     - org.opencontainers.image.description="Python GitHub Runner"

renovate.json

@@ -92,6 +92,15 @@
       "matchStrings": ["NODE_VERSION=(?<currentValue>\\S+)"],
       "depNameTemplate": "node",
       "datasourceTemplate": "node-version"
+    },
+    {
+      "customType": "regex",
+      "description": "Update Bun version",
+      "fileMatch": ["^Containerfile$", "^manifest\\.yaml$"],
+      "matchStrings": ["BUN_VERSION=(?<currentValue>\\S+)"],
+      "depNameTemplate": "oven-sh/bun",
+      "datasourceTemplate": "github-releases",
+      "extractVersionTemplate": "^bun-v?(?<version>.+)$"
     }
   ]
 }