Initial implementation of generic artifact storage system

- FastAPI-based caching proxy for remote file servers
- YAML configuration for multiple remotes (GitHub, Gitea, HashiCorp, etc.)
- Direct URL API: /api/v1/remote/{remote}/{path} with auto-download and caching
- Pattern-based access control with regex filtering
- S3/MinIO backend storage with predictable paths
- Docker Compose setup with MinIO for local development

Dockerfile

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+# Use Alpine Linux as base image
+FROM python:3.11-alpine
+
+# Set working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apk add --no-cache \
+    gcc \
+    musl-dev \
+    libffi-dev \
+    postgresql-dev \
+    curl \
+    wget \
+    tar
+
+# Install uv
+ARG PACKAGE_VERSION=0.9.21
+RUN wget -O /app/uv-x86_64-unknown-linux-musl.tar.gz https://github.com/astral-sh/uv/releases/download/${PACKAGE_VERSION}/uv-x86_64-unknown-linux-musl.tar.gz && \
+    tar xf /app/uv-x86_64-unknown-linux-musl.tar.gz -C /app && \
+    mv /app/uv-x86_64-unknown-linux-musl/uv /usr/local/bin/uv && \
+    rm -rf /app/uv-x86_64-unknown-linux-musl* && \
+    chmod +x /usr/local/bin/uv && \
+    uv --version
+
+# Create non-root user first
+RUN adduser -D -s /bin/sh appuser && \
+    chown -R appuser:appuser /app
+
+# Copy dependency files and change ownership
+COPY --chown=appuser:appuser pyproject.toml uv.lock README.md ./
+
+# Switch to appuser and install Python dependencies
+USER appuser
+RUN uv sync --frozen
+
+# Copy application source
+COPY --chown=appuser:appuser src/ ./src/
+COPY --chown=appuser:appuser remotes.yaml ./
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/health || exit 1
+
+# Run the application
+CMD ["uv", "run", "python", "-m", "src.artifactapi.main"]