install

#!/bin/sh
# Copyright dunnhumby Germany GmbH 2017.
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
#
# Build a docker image for D projects
set -eu

beaver=$(dirname $0)/../beaver

# Package name deduced based on supplied DMD version
case "$DMD" in
    dmd*   ) PKG= ;;
    1.*    ) PKG="dmd1=$DMD-$DIST" ;;
    2.*.s* ) PKG="dmd-transitional=$DMD-$DIST" ;;
    2.*    ) if [ $(echo $DMD | cut -d. -f2) -ge 077 ]; then
                PKG="dmd-compiler=$DMD dmd-tools=$DMD libphobos2-dev=$DMD"
             else
                PKG="dmd-bin=$DMD libphobos2-dev=$DMD"
             fi ;;
    *      ) echo "Unknown \$DMD ($DMD)" >&2; exit 1 ;;
esac

# FIXME: Use beaver install for this for consistency and DRY
# Copy a file only if it exist
maybe_cp()
{
    if test "$(readlink -m "$1")" != "$(readlink -m "$2")" -a -f "$1"
    then
        cp -v "$1" "$2"
    fi
}
# Store if a .dockerignore existed already
dockerignore=false
if test -f ".dockerignore"
then
    dockerignore=true
fi
# Look if a particular context was given and copy the .dockerfile from it
if test -n "${BEAVER_DOCKER_CONTEXT:-}"
then
    # Only remove .dockerignore if none existed
    if ! $dockerignore
    then
        trap 'r=$?; if test $r -eq 0 -a "${BEAVER_DEBUG:-0}" -ne 1; \
                then rm -f .dockerignore; fi; exit $r' EXIT
    fi
    maybe_cp "$BEAVER_DOCKER_CONTEXT/.dockerignore" .dockerignore
    maybe_cp "$BEAVER_DOCKER_CONTEXT/dockerignore" .dockerignore
    docker_dir="-d $BEAVER_DOCKER_CONTEXT"
else
    BEAVER_DOCKER_CONTEXT=.
    docker_dir=
fi

# Generate the Dockerfile including the DMD_PKG argument and install the
# relevant DMD
"$beaver" docker gen-dockerfile $docker_dir \
        -i "$BEAVER_DOCKER_CONTEXT/beaver.Dockerfile" \
        -I 'ARG DMD_PKG' -I 'ENV DMD_PKG=$DMD_PKG' \
        -I 'RUN apt update && apt -y install --allow-downgrades $DMD_PKG' \
        -o beaver.Dockerfile.generated

# Build the docker image from the generated Dockerfile passing DMD_PKG
"$beaver" docker build --build-arg "DMD_PKG=$PKG" \
        -f beaver.Dockerfile.generated "$@" .

if test "${BEAVER_DEBUG:-0}" -ne 1
then
    rm -f beaver.Dockerfile.generated
fi