From e4e7b90bf3bdacd80c2df2d050bd1f51184564c7 Mon Sep 17 00:00:00 2001
From: David Lee <david.lee@datadoghq.com>
Date: Wed, 16 Aug 2023 09:56:09 -0700
Subject: [PATCH] Support building extension images for alpine (#162)

---
 scripts/Dockerfile.alpine                    |  4 ++++
 scripts/build_and_push_docker_image.sh       | 13 ++++++++++---
 scripts/build_binary_and_layer_dockerized.sh |  7 +++++++
 3 files changed, 21 insertions(+), 3 deletions(-)
 create mode 100644 scripts/Dockerfile.alpine

diff --git a/scripts/Dockerfile.alpine b/scripts/Dockerfile.alpine
new file mode 100644
index 00000000..37a4e29e
--- /dev/null
+++ b/scripts/Dockerfile.alpine
@@ -0,0 +1,4 @@
+FROM scratch
+ARG TARGETARCH
+COPY .layers/datadog_extension-$TARGETARCH-alpine/extensions/datadog-agent opt/extensions/datadog-agent
+COPY --chmod=0755 scripts/datadog_wrapper opt/datadog_wrapper
diff --git a/scripts/build_and_push_docker_image.sh b/scripts/build_and_push_docker_image.sh
index 673ef5c6..9153ff12 100755
--- a/scripts/build_and_push_docker_image.sh
+++ b/scripts/build_and_push_docker_image.sh
@@ -10,7 +10,6 @@
 set -e
 
 DOCKER_REPOSITORY_NAME="datadog/lambda-extension"
-DOCKERFILE_LOCATION="scripts/Dockerfile"
 
 # Move into the root directory, so this script can be called from any directory
 SCRIPTS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
@@ -24,10 +23,18 @@ if [ -z "$VERSION" ]; then
 fi
 
 # Build the image, tagged with the version
-echo "Building the Docker image, and pushing to Dockerhub"
+echo "Building the non-alpine Docker image, and pushing to Dockerhub"
 docker buildx build --platform linux/arm64,linux/amd64 \
   -t $DOCKER_REPOSITORY_NAME:$VERSION \
   -t $DOCKER_REPOSITORY_NAME:latest \
   -f ./scripts/Dockerfile \
   --build-arg EXTENSION_VERSION="${VERSION}" . \
-  --push
\ No newline at end of file
+  --push
+
+echo "Building the alpine Docker image, and pushing to Dockerhub"
+docker buildx build --platform linux/arm64,linux/amd64 \
+  -t $DOCKER_REPOSITORY_NAME:$VERSION-alpine \
+  -t $DOCKER_REPOSITORY_NAME:latest-alpine \
+  -f ./scripts/Dockerfile.alpine \
+  --build-arg EXTENSION_VERSION="${VERSION}" . \
+  --push
diff --git a/scripts/build_binary_and_layer_dockerized.sh b/scripts/build_binary_and_layer_dockerized.sh
index 0abbf1f2..334cc2a0 100755
--- a/scripts/build_binary_and_layer_dockerized.sh
+++ b/scripts/build_binary_and_layer_dockerized.sh
@@ -89,11 +89,18 @@ if [ "$SERVERLESS_INIT" == "true" ]; then
 elif [ "$ARCHITECTURE" == "amd64" ]; then
     echo "Building for amd64 only"
     docker_build_zip amd64
+    BUILD_FILE=Dockerfile.alpine.build
+    docker_build_zip amd64 -alpine
 elif [ "$ARCHITECTURE" == "arm64" ]; then
     echo "Building for arm64 only"
     docker_build_zip arm64
+    BUILD_FILE=Dockerfile.alpine.build
+    docker_build_zip arm64 -alpine
 else
     echo "Building for both amd64 and arm64"
     docker_build_zip amd64
     docker_build_zip arm64
+    BUILD_FILE=Dockerfile.alpine.build
+    docker_build_zip amd64 -alpine
+    docker_build_zip arm64 -alpine
 fi