Enhance Dockerfile for AWS Lambda deployment by adding system dependencies, setting up the working directory, and optimizing the installation of Python packages. Create necessary directories for certificate storage and configure environment variables for improved application performance.

Author: maxsonferovante

Dockerfile

@@ -1,12 +1,36 @@
 FROM public.ecr.aws/lambda/python:3.13
 
-ENV PYTHONDONTWRITEBYTECODE=1
-ENV PYTHONUNBUFFERED=1
+# Install system dependencies
+RUN dnf update -y && \
+    dnf install -y \
+    freetype-devel \
+    libjpeg-turbo-devel \
+    zlib-devel \
+    gcc \
+    make \
+    python3-devel \
+    fontconfig && \
+    dnf clean all
+
+# Set working directory
+WORKDIR ${LAMBDA_TASK_ROOT}
+
+# Copy requirements first to leverage Docker cache
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
 
-WORKDIR /var/task
+# Copy the entire application
 COPY . .
 
-RUN python -m pip install -r requirements.txt
+# Create necessary directories
+RUN mkdir -p /tmp/certificates && \
+    chmod 777 /tmp/certificates
+
+# Set environment variables
+ENV PYTHONPATH=${LAMBDA_TASK_ROOT}
+ENV FONTCONFIG_PATH=/etc/fonts
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
 
-EXPOSE 9000
-CMD ["lambda_function.lambda_handler"]
+# Set the CMD to your handler
+CMD [ "lambda_function.lambda_handler" ]

readme.md

@@ -99,7 +99,7 @@ pip install -r requirements.txt
 
 3. Execute com Docker:
 ```bash
-docker compose up --build --watch
+docker build -t certified-builder . && docker run -p 9000:8080 certified-builder
 ```
 
 4. Teste localmente: