Add missing Dockerfile for Anchore security scan workflow

.dockerignore

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+# Exclude version control
+.git
+.gitignore
+
+# Exclude GitHub workflows and configuration
+.github
+
+# Exclude build artifacts and dependencies
+node_modules
+dist
+
+# Exclude temporary files
+*.tmp
+*.log

Dockerfile

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+# Minimal Dockerfile for desktop-tutorial repository
+# This allows the Anchore security scanning workflow to run successfully
+
+FROM alpine:3.19
+
+# Add a label for documentation
+LABEL maintainer="desktop-tutorial"
+LABEL description="Minimal Docker image for GitHub Desktop tutorial repository"
+
+# Create a simple directory structure
+RUN mkdir -p /app
+
+# Set working directory
+WORKDIR /app
+
+# Add repository files
+COPY . .
+
+# Default command
+CMD ["/bin/sh"]

dist/README.md

@@ -0,0 +1 @@
+# Placeholder for build artifacts