Improve Docker build efficiency

.dockerignore

@@ -2,9 +2,8 @@
 frontend/node_modules
 frontend/dist
 
-# Ignore debug build artifacts but allow release artifacts
-**/target/debug
-!**/target/release
+# Ignore build artifacts
+**/target
 
 # Rust/Cargo related
 **/Cargo.lock

Dockerfile.backend

@@ -5,8 +5,17 @@ RUN apt-get update && apt-get install -y \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
-COPY . .
-RUN cargo build --release
+
+# cache dependencies
+COPY Cargo.toml Cargo.lock ./
+RUN mkdir src && echo "fn main() {}" > src/main.rs \
+    && cargo build --release --locked \
+    && rm -r src
+
+COPY src ./src
+COPY migrations ./migrations
+COPY diesel.toml ./
+RUN cargo build --release --locked
 
 FROM debian:buster-slim
 

Dockerfile.worker

@@ -9,11 +9,17 @@ RUN apt-get update && apt-get install -y \
 
 WORKDIR /app
 
-# Copy the worker application code
+# cache dependencies for the worker
+COPY worker_app/Cargo.toml ./worker_app/
+RUN mkdir -p worker_app/src && echo "fn main() {}" > worker_app/src/main.rs \
+    && cd worker_app && cargo build --release --locked \
+    && rm -r src
+
+# Copy the worker application source
 COPY worker_app /app/worker_app
 
 # Build the worker application
-RUN cd worker_app && cargo build --release
+RUN cd worker_app && cargo build --release --locked
 
 # Install FluentCLI
 RUN cargo install --force --git https://github.com/njfio/fluent_cli --branch v.0.5.5-feature-docker-image fluent

frontend/Dockerfile.frontend

@@ -6,17 +6,11 @@ COPY package*.json ./
 
 ENV PUPPETEER_SKIP_DOWNLOAD=true
 
-# Clear npm cache
-RUN npm cache clean --force
-
-# Install dependencies
-RUN npm ci
-
-# Install Vuex (latest version compatible with Vue 3)
-RUN npm install vuex@4
-
-# Install dev dependencies including @types/node
-RUN npm install --save-dev @types/node
+# Clear npm cache and install dependencies
+RUN npm cache clean --force \
+    && npm ci \
+    && npm install vuex@4 \
+    && npm install --save-dev @types/node
 
 # Copy all project files
 COPY . .