Build Node binary Docker image

Readme.md

Export a linux binary with its lib dependencies to a chroot or initramfs

Just sudo make

compile.sh

#!/bin/bash
cd /app
npm install
npm install -g enclose
enclose --loglevel info -x -o ./$2 ./$1
./copy_ldd.sh $2 build
cd build && tar zcf build.tar.gz * && mv build.tar.gz ../ && cd /app && rm -rf build
exit

copy_ldd.sh

#!/bin/bash

if [ $# != 2 ] ; then
    echo "usage $0 PATH_TO_BINARY TARGET_FOLDER"
    exit 1
fi

PATH_TO_BINARY="$1"
TARGET_FOLDER="$2"

# if we cannot find the the binary we have to abort
if [ ! -f "$PATH_TO_BINARY" ] ; then
    echo "The file '$PATH_TO_BINARY' was not found. Aborting!"
    exit 1
fi

# copy the binary to the target folder
# create directories if required
echo "---> copy binary itself"
mkdir -p "$TARGET_FOLDER"/app
cp --parents -v "$PATH_TO_BINARY" "$TARGET_FOLDER"/app
cp --parents -v -R node_modules "$TARGET_FOLDER"/app


# copy the required shared libs to the target folder
# create directories if required
echo "---> copy libraries"
for lib in `ldd "$PATH_TO_BINARY" | cut -d'>' -f2 | awk '{print $1}' | grep "/"` ; do
   if [ -f "$lib" ] ; then
        cp -v --parents "$lib" "$TARGET_FOLDER"
   fi  
done
echo "Done!!!"

Makefile

NAME = mqtt2fluent
APP_NAME = server.js
NODE_VERSION = 0.12.7

PWD := $(shell pwd)

.PHONY: all

all: clean build

build:
	docker run -ti --rm -v $(PWD):/app node:$(NODE_VERSION) /app/compile.sh $(APP_NAME) $(NAME)
	echo 'FROM scratch\nADD build.tar.gz /\nCMD ["/app/$(NAME)"]' > Dockerfile
	docker build -t philipz/$(NAME) .

clean: clean-exe clean-build

clean-docker:
	docker rmi philipz/$(NAME)
clean-exe:
	sudo rm -f $(NAME)
clean-build:
	sudo rm -rf build 
	sudo rm -f build.tar.gz