Dockerfile that compiles node-sass binaries in Alpine for 64-bit iojs v1

Dockerfile

#####
# Running:
# --------
# docker build --tag node-sass-binaries .
# docker run node-sass-binaries cat /node-sass/binaries.tar.gz > binaries.tar.gz
#######

FROM alpine:3.3

### setup ###

RUN apk add --no-cache python=2.7.11-r3 curl wget git-perl bash make gcc g++ linux-headers libgcc libstdc++
RUN rm /bin/sh && ln -s /bin/bash /bin/sh

### install node version from source ###
### substitute the 4 in `make -j4` for the number of cores your docker has
RUN cd /tmp && \
    wget https://iojs.org/dist/v1.8.4/iojs-v1.8.4.tar.gz && \
    tar -xzvf iojs-v1.8.4.tar.gz &&\
    cd iojs-v1.8.4 && \
    ./configure &&\
    make -j4 &&\
    make install &&\
    node -v

### get node-sass ###
RUN git clone https://github.com/sass/node-sass --recursive
WORKDIR /node-sass

### build the binaries ###
RUN echo "v3.7.0"
RUN rm -rf vendor
RUN git fetch
RUN git checkout v3.7.0
RUN git submodule update --init --recursive
RUN npm install --verbose
RUN node scripts/build.js -f --verbose

### place binaries in vendor folder ###
RUN ls -lsa vendor
RUN tar -cvzf binaries.tar.gz vendor/