feat: add klog

backend/Dockerfile

@@ -0,0 +1,50 @@
+FROM rust:1.87-slim AS builder
+
+WORKDIR /build
+
+RUN apt-get update && apt-get install -y pkg-config libssl-dev && rm -rf /var/lib/apt/lists/*
+
+# Copy workspace manifests
+COPY Cargo.toml Cargo.lock ./
+
+# Copy only the crates needed for klog-backend
+COPY crates/ktracing/Cargo.toml crates/ktracing/Cargo.toml
+COPY crates/ktracing-subscriber/Cargo.toml crates/ktracing-subscriber/Cargo.toml
+COPY klog/backend/Cargo.toml klog/backend/Cargo.toml
+COPY klog/klog-cli/Cargo.toml klog/klog-cli/Cargo.toml
+COPY klog/types/Cargo.toml klog/types/Cargo.toml
+
+# Stub out every workspace member so Cargo can resolve the graph without full source
+RUN find . -name "Cargo.toml" -not -path "./Cargo.toml" | while read f; do \
+      dir=$(dirname "$f"); \
+      mkdir -p "$dir/src"; \
+      echo 'fn main() {}' > "$dir/src/main.rs"; \
+      touch "$dir/src/lib.rs"; \
+    done
+
+# Build deps only (cache layer)
+RUN cargo build --release -p klog-backend 2>/dev/null || true
+
+# Now copy real source
+COPY crates/ktracing/src crates/ktracing/src
+COPY crates/ktracing-subscriber/src crates/ktracing-subscriber/src
+COPY klog/backend/src klog/backend/src
+COPY klog/types/src klog/types/src
+
+# Touch to invalidate cached stubs
+RUN find klog/backend/src klog/types/src crates/ktracing/src crates/ktracing-subscriber/src \
+      -name "*.rs" -exec touch {} +
+
+RUN cargo build --release -p klog-backend
+
+# ── Runtime image ─────────────────────────────────────────────────────────────
+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y ca-certificates && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /build/target/release/klog-backend /usr/local/bin/klog-backend
+
+ENV PORT=3000
+EXPOSE 3000
+
+CMD ["/usr/local/bin/klog-backend"]