feat: update Dockerfile and documentation for platform-specific dependency generation

.dockerignore

@@ -3,6 +3,8 @@ node_modules/
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+# Let Docker generate platform-specific lockfile
+package-lock.json
 
 # Build outputs
 dist/

.gitignore

@@ -15,4 +15,8 @@ accounts.main.jsonc
 .DS_Store
 .playwright-chromium-installed
 *.log
-.update-backup/
+.update-backup/
+
+# Exclude package-lock.json from repo for cross-platform compatibility
+# Each platform (Windows/Linux/Raspberry Pi/Docker) generates its own
+package-lock.json

Dockerfile

@@ -8,10 +8,12 @@ WORKDIR /usr/src/microsoft-rewards-script
 ENV PLAYWRIGHT_BROWSERS_PATH=0
 
 # Copy package files
-COPY package.json package-lock.json tsconfig.json ./
+COPY package.json tsconfig.json ./
 
-# Install all dependencies required to build the script
-RUN npm ci --ignore-scripts
+# Generate fresh lockfile for target platform architecture
+# This ensures native dependencies are resolved correctly
+RUN npm install --ignore-scripts --package-lock-only \
+    && npm ci --ignore-scripts
 
 # Copy source and build
 COPY . .

docs/docker.md

@@ -186,6 +186,21 @@ docker inspect --format='{{.State.Health.Status}}' microsoft-rewards-script
 
 ## ⚠️ Important Notes
 
+### Platform Compatibility
+
+The Docker build **automatically generates platform-specific dependencies** for the target architecture:
+
+- ✅ **Windows (x86_64)** — Fully supported
+- ✅ **Linux (x86_64)** — Fully supported
+- ✅ **Raspberry Pi (ARM64)** — Fully supported
+- ✅ **macOS (ARM64/Apple Silicon)** — Fully supported
+
+The build process regenerates `package-lock.json` inside the container to ensure native dependencies (Playwright, etc.) match the target platform. This means:
+
+- **No cross-platform compatibility issues**
+- **Native performance on all architectures**
+- **Raspberry Pi users won't encounter binary mismatch errors**
+
 ### Buy Mode Not Supported
 
 **Buy Mode cannot be used in Docker** because it requires interactive terminal input. Use Buy Mode only in local installations: