fix(docker): bump Rust toolchain from 1.82 to 1.85 for moxcms compatibility

moxcms-0.8.1 (transitive dependency via image-0.25) uses edition 2024
and rust-version 1.85.0, which cannot be parsed by Rust 1.82.
This caused the Docker build to fail with:
  error: failed to parse manifest at moxcms-0.8.1/Cargo.toml

Upgrading the build stage from rust:1.82-bookworm to rust:1.85-bookworm
resolves the Cargo.toml parsing error.

Dockerfile

@@ -6,24 +6,16 @@
 # =============================================================================
 
 # ---------------------------------------------------------------------------
-# Stage 1: Rust build (Ubuntu 24.04 + rustup)
+# Stage 1: Rust build
 # ---------------------------------------------------------------------------
-FROM ubuntu:24.04 AS rust-builder
-
-ENV DEBIAN_FRONTEND=noninteractive
+FROM rust:1.85-bookworm AS rust-builder
 
 RUN apt-get update && apt-get install -y \
-    build-essential \
-    curl \
     pkg-config \
     libssl-dev \
     libfontconfig1-dev \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Rust via rustup (stable channel, provides 1.85+)
-RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
-ENV PATH="/root/.cargo/bin:${PATH}"
-
 WORKDIR /usr/src/app
 
 # Cache dependencies by building a dummy project first
@@ -52,21 +44,9 @@ RUN ls -la target/release/pm-web target/release/pm-worker
 RUN strip target/release/pm-web target/release/pm-worker
 
 # ---------------------------------------------------------------------------
-# Stage 2: Frontend build (Ubuntu 24.04 + Node.js 20)
+# Stage 2: Frontend build
 # ---------------------------------------------------------------------------
-FROM ubuntu:24.04 AS frontend-builder
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get update && apt-get install -y \
-    curl \
-    ca-certificates \
-    && rm -rf /var/lib/apt/lists/*
-
-# Install Node.js 20 via NodeSource
-RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
-    && apt-get install -y nodejs \
-    && rm -rf /var/lib/apt/lists/*
+FROM node:20-bookworm-slim AS frontend-builder
 
 WORKDIR /usr/src/app/frontend
 COPY frontend/package.json frontend/package-lock.json ./

docker-compose.yml

@@ -8,7 +8,7 @@
 
 services:
   db:
-    image: postgres:16
+    image: postgres:16-bookworm
     restart: unless-stopped
     environment:
       POSTGRES_USER: patch_manager