#!/bin/bash

# Bring in the variables from SOLUTION file
#
export $(grep -v '^#' SOLUTION | xargs -d '\n')
export $(grep -v '^#' MANIFEST | xargs -d '\n')

# Remove the Dockerfile if it exists; should check
# if it is clean first, and abort if not.
#
[ -e Dockerfile ] && rm Dockerfile

cat << EOM > Dockerfile
#
# DO NOT EDIT THIS DOCKERFILE
#
# This file is auto-generated via scripts/build-dockerfile
# by using environment substitution while concatenating the
# contents of templates/*, and then adding the contents
# of Dockerfile.solution
#
# Most solution specific changes should be isolated in
# Dockerfile.solution. After making changes, you can
# then re-run scripts/build-dockerfile
#
EOM

for snippet in templates/*.in; do
  cat << EOM >> Dockerfile

#
# Template $snippt begins here (from templates/${snippet})
#
EOM
  envsubst < $snippet >> Dockerfile
done

cat << EOM >> Dockerfile

#
# Solution begins here (from Dockerfile.solution)
#
EOM

envsubst < Dockerfile.solution >> Dockerfile

docker build . -t $CONTAINER:agama-${AGAMA_VERSION}

cat << EOM

If the build looks good, you should commit the changes
to Dockerfile and tag it as agama-${AGAMA_VERSION}:

  git commit -s -a -m "Build of agama-${AGAMA_VERSION}"
  git tag -f agama-${AGAMA_VERSION}

EOM