Fix #62: Merge Docker images by making them multi-platform

Makefile

@@ -51,7 +51,7 @@ layer-console:
 # This rule matches with a wildcard, for example `layer-php-80`.
 # The `$*` variable will contained the matched part, in this case `php-80`.
 layer-%:
-	./utils/docker-zip-dir.sh bref/${CPU_PREFIX}$* ${CPU_PREFIX}$*
+	./utils/docker-zip-dir.sh bref/$* $*
 
 
 # Upload the layers to AWS Lambda
@@ -74,8 +74,8 @@ upload-to-docker-hub: upload-to-docker-hub-php-80 upload-to-docker-hub-php-81 up
 upload-to-docker-hub-php-%:
 	# While in beta we tag and push the `:2` version, later we'll push `:latest` as well
 	for image in \
-	  "bref/${CPU_PREFIX}php-$*" "bref/${CPU_PREFIX}php-$*-fpm" "bref/${CPU_PREFIX}php-$*-console" \
-	  "bref/${CPU_PREFIX}build-php-$*" "bref/${CPU_PREFIX}php-$*-fpm-dev"; \
+	  "bref/php-$*" "bref/php-$*-fpm" "bref/php-$*-console" \
+	  "bref/build-php-$*" "bref/php-$*-fpm-dev"; \
 	do \
 		docker tag $$image $$image:2 ; \
 		docker push $$image:2 ; \
@@ -96,10 +96,10 @@ clean: clean-80 clean-81 clean-82
 	rm -f output/${CPU_PREFIX}*.zip
 clean-%:
 	# Clean Docker images to force rebuilding them
-	docker image rm --force bref/${CPU_PREFIX}build-php-$* \
-		bref/${CPU_PREFIX}php-$* \
-		bref/${CPU_PREFIX}php-$*-zip \
-		bref/${CPU_PREFIX}php-$*-fpm \
-		bref/${CPU_PREFIX}php-$*-fpm-zip \
-		bref/${CPU_PREFIX}php-$*-fpm-dev \
-		bref/${CPU_PREFIX}php-$*-console
+	docker image rm --force bref/build-php-$* \
+		bref/php-$* \
+		bref/php-$*-zip \
+		bref/php-$*-fpm \
+		bref/php-$*-fpm-zip \
+		bref/php-$*-fpm-dev \
+		bref/php-$*-console

docker-bake.hcl

@@ -5,9 +5,6 @@ group "default" {
 variable "CPU" {
   default = "x86"
 }
-variable "CPU_PREFIX" {
-  default = ""
-}
 variable "PHP_VERSION" {
   default = "80"
 }
@@ -21,7 +18,7 @@ variable "DOCKER_PLATFORM" {
 target "build-php" {
   dockerfile = "php-${PHP_VERSION}/Dockerfile"
   target = "build-environment"
-  tags = ["bref/${CPU_PREFIX}build-php-${PHP_VERSION}"]
+  tags = ["bref/build-php-${PHP_VERSION}"]
   args = {
     "CPU" = "${CPU}"
     "IMAGE_VERSION_SUFFIX" = "${IMAGE_VERSION_SUFFIX}"
@@ -32,28 +29,28 @@ target "build-php" {
 target "php" {
   dockerfile = "php-${PHP_VERSION}/Dockerfile"
   target = "function"
-  tags = ["bref/${CPU_PREFIX}php-${PHP_VERSION}"]
+  tags = ["bref/php-${PHP_VERSION}"]
   args = {
     "CPU" = "${CPU}"
     "IMAGE_VERSION_SUFFIX" = "${IMAGE_VERSION_SUFFIX}"
   }
   contexts = {
-    "bref/${CPU_PREFIX}build-php-${PHP_VERSION}" = "target:build-php"
+    "bref/build-php-${PHP_VERSION}" = "target:build-php"
   }
   platforms = ["${DOCKER_PLATFORM}"]
 }
 
 target "php-fpm" {
   dockerfile = "php-${PHP_VERSION}/Dockerfile"
   target = "fpm"
-  tags = ["bref/${CPU_PREFIX}php-${PHP_VERSION}-fpm"]
+  tags = ["bref/php-${PHP_VERSION}-fpm"]
   args = {
     "CPU" = "${CPU}"
     "IMAGE_VERSION_SUFFIX" = "${IMAGE_VERSION_SUFFIX}"
   }
   contexts = {
-    "bref/${CPU_PREFIX}build-php-${PHP_VERSION}" = "target:build-php"
-    "bref/${CPU_PREFIX}php-${PHP_VERSION}" = "target:php"
+    "bref/build-php-${PHP_VERSION}" = "target:build-php"
+    "bref/php-${PHP_VERSION}" = "target:php"
   }
   platforms = ["${DOCKER_PLATFORM}"]
 }
@@ -64,37 +61,35 @@ target "console-zip" {
   tags = ["bref/console-zip"]
   args = {
     PHP_VERSION = "${PHP_VERSION}"
-    CPU_PREFIX = "${CPU_PREFIX}"
   }
   platforms = ["${DOCKER_PLATFORM}"]
 }
 
 target "console" {
   context = "layers/console"
   target = "console"
-  tags = ["bref/${CPU_PREFIX}php-${PHP_VERSION}-console"]
+  tags = ["bref/php-${PHP_VERSION}-console"]
   args = {
     PHP_VERSION = "${PHP_VERSION}"
-    CPU_PREFIX = "${CPU_PREFIX}"
   }
   contexts = {
-    "bref/${CPU_PREFIX}build-php-${PHP_VERSION}" = "target:build-php"
-    "bref/${CPU_PREFIX}php-${PHP_VERSION}" = "target:php"
+    "bref/build-php-${PHP_VERSION}" = "target:build-php"
+    "bref/php-${PHP_VERSION}" = "target:php"
   }
   platforms = ["${DOCKER_PLATFORM}"]
 }
 
 target "php-fpm-dev" {
   context = "layers/fpm-dev"
-  tags = ["bref/${CPU_PREFIX}php-${PHP_VERSION}-fpm-dev"]
+  tags = ["bref/php-${PHP_VERSION}-fpm-dev"]
   args = {
     PHP_VERSION = "${PHP_VERSION}"
-    CPU_PREFIX = "${CPU_PREFIX}"
+    "CPU" = "${CPU}"
   }
   contexts = {
-    "bref/${CPU_PREFIX}build-php-${PHP_VERSION}" = "target:build-php"
-    "bref/${CPU_PREFIX}php-${PHP_VERSION}" = "target:php"
-    "bref/${CPU_PREFIX}php-${PHP_VERSION}-fpm" = "target:php-fpm"
+    "bref/build-php-${PHP_VERSION}" = "target:build-php"
+    "bref/php-${PHP_VERSION}" = "target:php"
+    "bref/php-${PHP_VERSION}-fpm" = "target:php-fpm"
     "bref/local-api-gateway" = "docker-image://bref/local-api-gateway:latest"
   }
   platforms = ["${DOCKER_PLATFORM}"]

layers/console/Dockerfile

@@ -1,6 +1,5 @@
 # syntax = docker/dockerfile:1.4
 ARG PHP_VERSION
-ARG CPU_PREFIX
 
 
 # This image only contains what's going in the layer zip file,
@@ -15,7 +14,7 @@ COPY --link bootstrap.sh /var/runtime/bootstrap
 
 
 # This image is published to Docker Hub and replicates Lambda
-FROM bref/${CPU_PREFIX}php-$PHP_VERSION as console
+FROM bref/php-$PHP_VERSION as console
 
 # Copy the console layer into /opt
 COPY --link --from=console-zip /opt /opt

layers/fpm-dev/Dockerfile

@@ -1,9 +1,9 @@
 # syntax = docker/dockerfile:1.4
-ARG CPU_PREFIX
+ARG CPU
 ARG PHP_VERSION
 
 
-FROM bref/${CPU_PREFIX}build-php-$PHP_VERSION as build_extensions
+FROM bref/build-php-$PHP_VERSION as build_extensions
 
 ARG PHP_VERSION
 
@@ -16,11 +16,11 @@ RUN cp $(php -r "echo ini_get('extension_dir');")/xdebug.so /opt/bref/extensions
 # Install Blackfire
 # https://blackfire.io/docs/up-and-running/installation?action=install&mode=full&version=latest&mode=full&location=server&os=manual&language=php#install-the-php-probe
 ARG BLACKFIRE_VERSION=1.86.1
-RUN if [[ $CPU_PREFIX == "" ]]; then curl -A "Docker" -o /opt/bref/extensions/blackfire.so -L -s "https://packages.blackfire.io/binaries/blackfire-php/$BLACKFIRE_VERSION/blackfire-php-linux_amd64-php-"$PHP_VERSION".so"; fi
-RUN if [[ $CPU_PREFIX == "arm-" ]]; then curl -A "Docker" -o /opt/bref/extensions/blackfire.so -L -s "https://packages.blackfire.io/binaries/blackfire-php/$BLACKFIRE_VERSION/blackfire-php-linux_arm64-php-"$PHP_VERSION".so"; fi
+RUN if [[ $CPU == "x86" ]]; then curl -A "Docker" -o /opt/bref/extensions/blackfire.so -L -s "https://packages.blackfire.io/binaries/blackfire-php/$BLACKFIRE_VERSION/blackfire-php-linux_amd64-php-"$PHP_VERSION".so"; fi
+RUN if [[ $CPU == "arm" ]]; then curl -A "Docker" -o /opt/bref/extensions/blackfire.so -L -s "https://packages.blackfire.io/binaries/blackfire-php/$BLACKFIRE_VERSION/blackfire-php-linux_arm64-php-"$PHP_VERSION".so"; fi
 
 
-FROM bref/${CPU_PREFIX}php-${PHP_VERSION}-fpm
+FROM bref/php-${PHP_VERSION}-fpm
 
 COPY --link --from=build_extensions /opt /opt
 COPY --link bref-entrypoint.sh /

tests/Makefile

@@ -5,36 +5,36 @@ test: test-80 test-81 test-82
 # This rule matches with a wildcard, for example `test-80`.
 # The `$*` variable will contained the matched part, in this case `80`.
 test-%: vendor
-	docker run --platform=${DOCKER_PLATFORM} --rm -v=$(PWD):/var/task:ro --entrypoint=php bref/${CPU_PREFIX}php-$* \
+	docker run --platform=${DOCKER_PLATFORM} --rm -v=$(PWD):/var/task:ro --entrypoint=php bref/php-$* \
 		   test_1_binary.php $*
 
-	docker run --platform=${DOCKER_PLATFORM} --rm -v=$(PWD):/var/task:ro --entrypoint=php bref/${CPU_PREFIX}php-$* \
+	docker run --platform=${DOCKER_PLATFORM} --rm -v=$(PWD):/var/task:ro --entrypoint=php bref/php-$* \
 		   test_2_extensions.php
 
 	docker run --platform=${DOCKER_PLATFORM} --rm -v=$(PWD):/var/task:ro --entrypoint=php \
-		   -e PHP_INI_SCAN_DIR="/opt/bref/etc/php/conf.d/:/var/task/" bref/${CPU_PREFIX}php-$* \
+		   -e PHP_INI_SCAN_DIR="/opt/bref/etc/php/conf.d/:/var/task/" bref/php-$* \
  		   test_3_manual_enabling_extensions.php
 
 	# Test function handler
 	docker stop test-${CPU_PREFIX}php-$* 2> /dev/null || true # silence errors
 	docker run --platform=${DOCKER_PLATFORM} --rm --detach -v=$(PWD):/var/task:ro --name test-${CPU_PREFIX}php-$* \
-		   bref/${CPU_PREFIX}php-$* test_4_function_handler.php
+		   bref/php-$* test_4_function_handler.php
 	docker exec test-${CPU_PREFIX}php-$* php test_4_function_invocation.php \
         || (docker logs test-${CPU_PREFIX}php-$* && exit 1)
 	docker stop test-${CPU_PREFIX}php-$*
 
 	# Test FPM handler
 	docker stop test-${CPU_PREFIX}php-$*-fpm 2> /dev/null || true # silence errors
 	docker run --platform=${DOCKER_PLATFORM} --rm --detach -v=$(PWD):/var/task:ro --name test-${CPU_PREFIX}php-$*-fpm \
-		   bref/${CPU_PREFIX}php-$*-fpm test_5_fpm_handler.php
+		   bref/php-$*-fpm test_5_fpm_handler.php
 	docker exec test-${CPU_PREFIX}php-$*-fpm php test_5_fpm_invocation.php \
 		|| (docker logs test-${CPU_PREFIX}php-$*-fpm && exit 1) # print logs in case of failure
 	docker stop test-${CPU_PREFIX}php-$*-fpm
 
 	# Test console handler
 	docker stop test-${CPU_PREFIX}php-$*-console 2> /dev/null || true # silence errors
 	docker run --platform=${DOCKER_PLATFORM} --rm --detach -v=$(PWD):/var/task:ro --name test-${CPU_PREFIX}php-$*-console \
-		   bref/${CPU_PREFIX}php-$*-console test_6_console_handler.php
+		   bref/php-$*-console test_6_console_handler.php
 	docker exec test-${CPU_PREFIX}php-$*-console php test_6_console_invocation.php \
 		|| (docker logs test-${CPU_PREFIX}php-$*-console && exit 1) # print logs in case of failure
 	docker stop test-${CPU_PREFIX}php-$*-console
@@ -43,7 +43,7 @@ test-%: vendor
 	docker stop test-${CPU_PREFIX}php-$*-test7 2> /dev/null || true # silence errors
 	docker run --platform=${DOCKER_PLATFORM} --rm --detach -v=$(PWD):/var/task:ro --name test-${CPU_PREFIX}php-$*-test7 \
 		   -e PHP_INI_SCAN_DIR="/opt/bref/etc/php/conf.d/:/var/task/" \
-		   bref/${CPU_PREFIX}php-$* test_4_function_handler.php
+		   bref/php-$* test_4_function_handler.php
 	docker exec test-${CPU_PREFIX}php-$*-test7 php test_7_custom_ini_scan_dir.php \
 		|| (docker logs test-${CPU_PREFIX}php-$*-test7 && exit 1) # print logs in case of failure
 	docker stop test-${CPU_PREFIX}php-$*-test7

utils/docker-zip-dir.sh

@@ -3,19 +3,22 @@
 # Fail on error
 set -e
 
-rm -f "output/$2.zip"
-rm -rf "output/$2"
-mkdir "output/$2"
+IMAGE_NAME="$1"
+LAYER_NAME="$2"
+
+rm -f "output/$LAYER_NAME.zip"
+rm -rf "output/$LAYER_NAME"
+mkdir "output/$LAYER_NAME"
 
 # Remove any previously failed container if it exists
 docker rm -f bref-export-zip 2>/dev/null || true
 
-docker create --name bref-export-zip "$1"
+docker create --name bref-export-zip --platform "$DOCKER_PLATFORM" "$IMAGE_NAME"
 
-docker cp bref-export-zip:/opt/. "output/$2"
+docker cp bref-export-zip:/opt/. "output/$LAYER_NAME"
 
-cd "output/$2"
+cd "output/$LAYER_NAME"
 
-zip --quiet --recurse-paths "../$2.zip" .
+zip --quiet --recurse-paths "../$LAYER_NAME.zip" .
 
 docker rm -f bref-export-zip