use python2 package

Dockerfile

@@ -1,11 +1,13 @@
-FROM node:lts-alpine
+ARG NODE_ALPINE_IMAGE=node:lts-alpine
+
+FROM $NODE_ALPINE_IMAGE
 
 # SERVERLESS_VERSION is set explicitly in the Makefile used to build, otherwise
 # use latest version.
 ARG SERVERLESS_VERSION=latest
 ENV SERVERLESS_VERSION $SERVERLESS_VERSION
 
-RUN apk --no-cache add python python3 python3-dev py-pip ca-certificates groff less bash make jq curl wget g++ zip git openssh && \
+RUN apk --no-cache add python2 python3 python3-dev py-pip ca-certificates groff less bash make jq curl wget g++ zip git openssh && \
     pip --no-cache-dir install awscli && \
     update-ca-certificates
 

Makefile

@@ -1,13 +1,21 @@
-SERVERLESS_VERSION ?= $(shell docker run --rm node:alpine npm show serverless version)
+NODE_ALPINE_IMAGE ?= node:lts-alpine
+SERVERLESS_VERSION ?= $(shell docker run --rm $(NODE_ALPINE_IMAGE) npm show serverless version)
 IMAGE_NAME ?= amaysim/serverless
 IMAGE = $(IMAGE_NAME):$(SERVERLESS_VERSION)
 ROOT_DIR = $(dir $(abspath $(firstword $(MAKEFILE_LIST))))
 
-ciTest: build clean
-ciDeploy: build push clean
+ciTest: deps build clean
+ciDeploy: deps build push clean
+
+deps:
+	$(info Pull latest version of $(NODE_ALPINE_IMAGE))
+	docker pull $(NODE_ALPINE_IMAGE)
 
 build: env-SERVERLESS_VERSION
-	docker build --build-arg SERVERLESS_VERSION=$(SERVERLESS_VERSION) -t $(IMAGE) .
+	docker build --no-cache \
+		--build-arg NODE_ALPINE_IMAGE=$(NODE_ALPINE_IMAGE) \
+		--build-arg SERVERLESS_VERSION=$(SERVERLESS_VERSION) \
+		-t $(IMAGE) .
 	docker run --rm $(IMAGE) bash -c 'serverless --version | grep $(SERVERLESS_VERSION)'
 
 push: env-DOCKER_USERNAME env-DOCKER_ACCESS_TOKEN
@@ -26,4 +34,4 @@ clean:
 
 env-%:
 	$(info Check if $* is not empty)
-	@docker run --rm -e ENV_VAR=$($*) node:alpine sh -c '[ -z "$$ENV_VAR" ] && echo "Error: $* is empty" && exit 1 || exit 0'
+	@docker run --rm -e ENV_VAR=$($*) $(NODE_ALPINE_IMAGE) sh -c '[ -z "$$ENV_VAR" ] && echo "Error: $* is empty" && exit 1 || exit 0'