erlang-for-leofs.dockerfile

##
## LeoFS' Erlang
##
FROM gliderlabs/alpine:3.4

MAINTAINER LeoFS <leo-project.net/leofs/>

ENV LANG=en_US.UTF-8 \
    HOME=/var/local/erlang/ \
    TERM=xterm

WORKDIR /tmp/erlang-build

##
## Installing Erlang
##
RUN mkdir -p ${HOME} && \
    adduser -s /bin/sh -u 1001 -G root -h ${HOME} -S -D default && \
    chown -R 1001:0 ${HOME} && \
    echo "@edge http://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories && \
    apk --no-cache --update upgrade && \
    apk add --no-cache \
      ca-certificates \
      openssl-dev \
      ncurses-dev \
      net-snmp-libs \
      unixodbc-dev \
      zlib-dev && \
    apk add --no-cache --virtual .erlang-build \
      git autoconf build-base perl-dev && \
    git clone -b OTP-18.3.4.4 --single-branch --depth 1 https://github.com/erlang/otp.git . && \
    export ERL_TOP=/tmp/erlang-build && \
    export PATH=$ERL_TOP/bin:$PATH && \
    export CPPFlAGS="-D_BSD_SOURCE $CPPFLAGS" && \
    ./otp_build autoconf && \
    ./configure --prefix=/usr \
      --sysconfdir=/etc \
      --mandir=/usr/share/man \
      --infodir=/usr/share/info \
      --without-javac \
      --without-wx \
      --without-debugger \
      --without-observer \
      --without-jinterface \
      --without-common_test \
      --without-cosEvent\
      --without-cosEventDomain \
      --without-cosFileTransfer \
      --without-cosNotification \
      --without-cosProperty \
      --without-cosTime \
      --without-cosTransactions \
      --without-dialyzer \
      --without-et \
      --without-gs \
      --without-ic \
      --without-megaco \
      --without-orber \
      --without-percept \
      --without-typer \
      --enable-threads \
      --enable-shared-zlib \
      --enable-ssl=dynamic-ssl-lib \
      --enable-hipe && \
    make -j4 && make install && \
    apk del .erlang-build && \
    cd $HOME && \
    rm -rf /tmp/erlang-build && \
    update-ca-certificates --fresh

WORKDIR ${HOME}

CMD ["/bin/sh"]

@yosukehara

Replacing

make -j4 

with

make -j"$(nproc)" 

would be good as it automatically scale with # of cores a builder have.
any others LGTM.