FROM alpine:latest as dist
ARG DOCKER_BUILD_DIR

LABEL maintainer aynic.os <support+docker@asycn.io>

ENV PACKER_VERSION=1.6.6

RUN apk --no-cache add \
        ansible \
        bash \
        git \
        qemu \
        qemu-system-x86_64 \
        qemu-img \
        openssl \
        socat \
        wget

ADD https://releases.hashicorp.com/packer/${PACKER_VERSION}/packer_${PACKER_VERSION}_linux_amd64.zip ./
ADD https://releases.hashicorp.com/packer/${PACKER_VERSION}/packer_${PACKER_VERSION}_SHA256SUMS ./

RUN sed -i '/.*linux_amd64.zip/!d' packer_${PACKER_VERSION}_SHA256SUMS
RUN sha256sum -cs packer_${PACKER_VERSION}_SHA256SUMS\
 && unzip packer_${PACKER_VERSION}_linux_amd64.zip -d /bin
RUN rm -f packer_${PACKER_VERSION}_linux_amd64.zip

ENTRYPOINT ["/bin/packer"]

FROM dist as master
ARG DOCKER_BUILD_DIR
ARG UID
ARG USER
ENV UID=${UID}
ENV GID=${UID}
ENV USER=${USER}

# If we provide a specific UID
RUN let $UID >/dev/null 2>&1 \
# Remove user with $UID if it is not our $USER
 && if [ "$(getent passwd $UID |awk 'BEGIN {FS=":"} {print $1}')" != "$USER" ]; then \
      sed -i '/^'$(getent passwd $UID |awk 'BEGIN {FS=":"} {print $1}')':x:'$UID':/d' /etc/passwd; \
      sed -i '/^'$(getent group $GID |awk 'BEGIN {FS=":"} {print $1}')':x:'$GID':/d' /etc/group; \
    fi \
# Force $UID if our $USER already exists
 && sed -i 's/^'$USER':x:[0-9]\+:[0-9]\+:/'$USER':x:'$UID':'$GID':/' /etc/passwd \
 && sed -i 's/^'$USER':x:[0-9]\+:/'$USER':x:'$GID':/' /etc/group \
# Create $USER if it does not exist
 && if [ "$(getent passwd $UID)" = "" ]; then \
      echo "$USER:x:$UID:$GID::/home/$USER:/bin/false" >> /etc/passwd; \
      echo "$USER:!:$(($(date +%s) / 60 / 60 / 24)):0:99999:7:::" >> /etc/shadow; \
      echo "$USER:x:$GID:" >> /etc/group; \
    fi \
 && mkdir -p /home/$USER \
 && chown $UID:$GID /home/$USER \
 || true

USER $USER