Fix Docker configuration for deployment

- Update backend Dockerfile to use Rust 1.85 (edition 2024 support)
- Add Aliyun mirrors for Alpine packages
- Add rsproxy.cn mirror for cargo crates
- Enable static OpenSSL linking
- Fix frontend Dockerfile to use NEXT_PUBLIC_API_BASE
- Add mkdir -p public to ensure public dir exists
- Update docker-compose files to use correct env var names
- Add docker-compose.deploy.yml for production deployment

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend_rust/Dockerfile

@@ -1,7 +1,16 @@
 # Build stage
-FROM rust:1.84-alpine AS builder
+FROM rust:1.85-alpine AS builder
 
-RUN apk add --no-cache musl-dev pkgconfig openssl-dev
+# Use Aliyun mirrors for faster package downloads in China
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
+
+RUN apk add --no-cache musl-dev pkgconfig openssl-dev openssl-libs-static
+
+# Configure cargo to use rsproxy.cn mirror for crates
+RUN mkdir -p /usr/local/cargo && printf '[source.crates-io]\nreplace-with = "rsproxy-sparse"\n\n[source.rsproxy-sparse]\nregistry = "sparse+https://rsproxy.cn/index/"\n\n[net]\ngit-fetch-with-cli = true\n' > /usr/local/cargo/config.toml
+
+# Static OpenSSL linking
+ENV OPENSSL_STATIC=1
 
 WORKDIR /app
 
@@ -30,13 +39,15 @@ RUN cargo build --release
 # Runtime stage
 FROM alpine:3.21
 
+# Use Aliyun mirrors
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
+
 RUN apk add --no-cache ca-certificates libgcc
 
 WORKDIR /app
 
 # Copy the binary from builder
 COPY --from=builder /app/target/release/backend_rust /app/backend_rust
-COPY --from=builder /app/target/release/migration /app/migration
 
 # Create uploads directory
 RUN mkdir -p /app/uploads/avatars