Add makefile and scripts and updated build script

Makefile

@@ -0,0 +1,9 @@
+DOCKER_IMAGE_NAME = calpine-os-linux
+DOCKER_IMAGE_VERSION = 3.13.3
+DOCKER_IMAGE_SIZE = $(shell docker images --format "{{.Repository}} {{.Size}}" | grep $(DOCKER_IMAGE_NAME) | cut -d\   -f2)
+
+build:
+	$(shell ./src/build.sh)
+	@echo "Size of the image: ${DOCKER_IMAGE_SIZE}"
+
+.PHONY: build

README.md

@@ -3,5 +3,9 @@
 - Minimal container image
 - Easy and fast runtime for serverless
 
+# Build
+```shell
+make build
+```
 # Contributors
 - Sambo Chea <sombochea@cubetiqs.com>

src/build.sh

@@ -4,7 +4,11 @@
 # MIT
 #
 
+# Catch errors
 set -ex
+
+# Default args
+DOCKER_IMAGE_NAME=${DOCKER_IMAGE_NAME:-calpine-os-linux}
 DOCKER_USERNAME="${DOCKER_USERNAME:-cubetiq}"
 ALPINE_VERSION="${ALPINE_VERSION:-3.13.3}"
 PACKAGES="apk-tools ca-certificates ssl_client"
@@ -19,6 +23,9 @@ mkdir $DOCKER_ROOT
 MS_ROOT="${DOCKER_ROOT}/../microscanner"
 mkdir $MS_ROOT
 
+# Load pre-install
+$PRE_INSTALL
+
 # Build from alpine rootfs
 # Download rootfs builder and verify it.
 wget https://raw.githubusercontent.com/alpinelinux/alpine-make-rootfs/v0.5.1/alpine-make-rootfs -O "$MKROOTFS"
@@ -35,21 +42,22 @@ sudo ${MKROOTFS} --mirror-uri http://dl-2.alpinelinux.org/alpine \
 # Create Dockerfile
 cat <<DOCKERFILE > "${DOCKER_ROOT}/Dockerfile"
 FROM scratch
-USER worker
+USER cubetiq
 ADD $(basename $BUILD_TAR) /
 CMD ["/bin/sh"]
 DOCKERFILE
 
 cd $DOCKER_ROOT
-docker build --no-cache -t "${DOCKER_USERNAME}/alpine:${ALPINE_VERSION}" .
+docker build --no-cache -t "${DOCKER_USERNAME}/${DOCKER_IMAGE_NAME}:${ALPINE_VERSION}" .
 cd -
 
-docker build  --build-arg BASE_IMAGE="${DOCKER_USERNAME}/alpine:${ALPINE_VERSION}" --build-arg MS_TOKEN="${MS_TOKEN}" - <<'DOCKERFILE'
+# Scanner for docker build docker for security for os container
+docker build --build-arg BASE_IMAGE="${DOCKER_USERNAME}/${DOCKER_IMAGE_NAME}:${ALPINE_VERSION}" --build-arg MS_TOKEN="${MS_TOKEN}" - <<'DOCKERFILE'
 ARG BASE_IMAGE
 FROM $BASE_IMAGE
 ARG MS_TOKEN
-RUN wget https://get.aquasec.com/microscanner -O /home/worker/microscanner \
+RUN wget https://get.aquasec.com/microscanner -O /home/cubetiq/microscanner \
-  && echo "8e01415d364a4173c9917832c2e64485d93ac712a18611ed5099b75b6f44e3a5  /home/worker/microscanner" | sha256sum -c - \
+  && echo "8e01415d364a4173c9917832c2e64485d93ac712a18611ed5099b75b6f44e3a5  /home/cubetiq/microscanner" | sha256sum -c - \
-  && chmod +x /home/worker/microscanner \
+  && chmod +x /home/cubetiq/microscanner \
-  && /home/worker/microscanner $MS_TOKEN
+  && /home/cubetiq/microscanner $MS_TOKEN
 DOCKERFILE

src/post-install.sh

@@ -17,4 +17,4 @@ update-ca-certificates
 /sbin/apk upgrade
 
 # Add a standard user.
-adduser -D -u1000 worker
+adduser -D -u1000 cubetiq