feat: v3 release with Coolify support and UI polish

backend/Dockerfile

@@ -0,0 +1,34 @@
+# ── Build stage ──────────────────────────────────────────────────────────────
+FROM golang:1.22-alpine AS builder
+
+WORKDIR /app
+
+# Copy go mod files first for layer caching
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source and build
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o msdl-backend main.go
+
+# ── Runtime stage ─────────────────────────────────────────────────────────────
+FROM alpine:3.19
+
+# Security: run as non-root
+RUN addgroup -S app && adduser -S app -G app
+
+WORKDIR /app
+
+# Copy binary and optional static public folder
+COPY --from=builder /app/msdl-backend .
+COPY --from=builder /app/public ./public
+
+RUN chown -R app:app /app
+USER app
+
+EXPOSE 3002
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+  CMD wget -qO- http://localhost:3002/health || exit 1
+
+CMD ["./msdl-backend"]

frontend/src/components/SiteFooter.tsx

@@ -16,7 +16,7 @@ export default function SiteFooter() {
         <Link to="/about" className="hover:text-zinc-500 transition-colors">About</Link>
         <span>·</span>
         <a
-          href="https://github.com"
+          href="https://github.com/starkSV/windows-iso-downloader"
           target="_blank"
           rel="noopener noreferrer"
           className="hover:text-zinc-500 transition-colors"