build: use lambda image to ensure binary compatibility when building from source (#650)

* build: use lambda python image instead of debian

* use sam build-python images

Author: florentinl

Dockerfile

@@ -7,6 +7,16 @@ ARG runtime
 RUN mkdir -p /build/python/lib/$runtime/site-packages
 WORKDIR /build
 
+# Install newer version of GCC on AL2
+RUN set -eux; \
+    if command -v yum >/dev/null 2>&1; then \
+      yum -y install git gcc10 gcc10-c++; \
+      cd /usr/bin; \
+      rm gcc && ln -s gcc10-gcc gcc; \
+      rm g++ && ln -s gcc10-g++ g++; \
+      rm cc && ln -s gcc10-cc cc; \
+    fi
+
 # Add Rust compiler which is needed to build dd-trace-py from source
 RUN curl https://sh.rustup.rs -sSf | \
     sh -s -- --default-toolchain stable -y

scripts/build_layers.sh

@@ -61,7 +61,7 @@ function docker_build_zip {
     # between different python runtimes.
     temp_dir=$(mktemp -d)
     docker buildx build -t datadog-lambda-python-${arch}:$1 . --no-cache \
-        --build-arg image=public.ecr.aws/docker/library/python:$1 \
+        --build-arg image=public.ecr.aws/sam/build-python$1:1 \
         --build-arg runtime=python$1 \
         --platform linux/${arch} \
         --progress=plain \