fix: correct Dockerfile content (was base64-encoded)

Dockerfile

@@ -1 +1,52 @@
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+# Build stage
+FROM golang:1.24-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache gcc musl-dev sqlite-dev
+
+WORKDIR /app
+
+# Copy go mod files
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build with CGO for SQLite
+ENV CGO_ENABLED=1
+RUN go build -ldflags="-s -w" -o /gitea-notification-hub ./cmd/server
+
+# Runtime stage
+FROM alpine:3.19
+
+# Install runtime dependencies (sqlite CLI + jq for manual mappings)
+RUN apk add --no-cache ca-certificates sqlite-libs tzdata sqlite jq
+
+# Create non-root user
+RUN adduser -D -g '' appuser
+
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /gitea-notification-hub .
+
+# Copy entrypoint script
+COPY docker-entrypoint.sh .
+RUN chmod +x docker-entrypoint.sh
+
+# Create data directory
+RUN mkdir -p /app/data && chown -R appuser:appuser /app
+
+# Switch to non-root user
+USER appuser
+
+# Expose port
+EXPOSE 8080
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1
+
+# Run
+ENTRYPOINT ["/bin/sh", "./docker-entrypoint.sh"]