local-configure.sh

#!/bin/bash

################################################################################
# Generate local build scripts
################################################################################

# debug
set -ex

# read profile from first argument
PROFILE="$1"

# verify profile
[ -n "$PROFILE" ]
[ -f "Dockerfile.$PROFILE" ]

# enable aliases below
shopt -s expand_aliases

# use typical macos aliases
which -s gsed && alias sed=gsed || true

# use this directory for build
WORKDIR=build.$PROFILE

# add bootstrap code to build shell script
cat << EOF > local-build.$PROFILE.sh
#!/bin/bash

# debug
set -ex

# enable aliases below
shopt -s expand_aliases

# use typical macos aliases
which -s gsed && alias sed=gsed || true
which -s grealpath && alias realpath=grealpath || true
which -s gsha512sum && alias sha512sum=gsha512sum || true
which -s mkisofs && alias genisoimage=mkisofs || true

# create build directory
mkdir -p "$WORKDIR"

# clean build directory
rm -rf "$WORKDIR"/{Dockerfile,*.iso,*.bat,*.sh,support,install,virtio}

# copy build context
cp -rfv support files "$WORKDIR"

################################################################################
# Code below is autogenerated from Dockerfile.$PROFILE file
################################################################################

EOF

# use regexp magic to convert Dockerfile to shell script for local execution
cat Dockerfile.$PROFILE \
  | sed -e 's!^RUN !!g' \
        -e 's!^\(ARG\|ENV\) \(.*\)=\(.*\)$!\2=${\2-\3}!g' \
        -e 's!^\(ARG\|ENV\) !# \0!g' \
        -e 's!^FROM !# \0!g' \
        -e 's!^LABEL !# \0!g' \
        -e 's!^ENTRYPOINT !# \0!g' \
        -e 's!^EXPOSE !# \0!g' \
        -e 's!^COPY !cp -f ./!g' \
        -e 's!^WORKDIR \(.*\)$!mkdir -p "'$WORKDIR'" \&\& cd "'$WORKDIR'"!g' \
        -e 's!yum !true \0!g' \
        -e 's!set !true \0!g' \
        -e '/^qemu-img create.*$/a if which -s vncviewer; then (sleep 5; vncviewer localhost:$VNC_PORT) & fi' \
        -e '/^QEMU_SRC_URL=/,/^$/d' \
        -e '/^HEALTHCHECK /,/^$/d' \
  >> local-build.$PROFILE.sh

# homebrew's qemu doesn't support aio=native by default
if [ `uname` = "Darwin" ]; then
  sed -i -e 's!,aio=native!!g' local-build.$PROFILE.sh
fi

# homebrew's qemu doesn't support qxl by default
if [ `uname` = "Darwin" ]; then
  sed -i -e 's!-qxl!-cirrus!g' local-build.$PROFILE.sh
fi

# mark build shell script executable
chmod +x local-build.$PROFILE.sh

# add header into generated Dockerfile
cat << EOF > local-build.$PROFILE.docker
################################################################################
# Code below is autogenerated from Dockerfile.$PROFILE file
################################################################################

EOF

# generate trimmed down Dockerfile that assumes that system.qcow2 is already built
cat Dockerfile.$PROFILE \
  | sed -e '/^ARG WIN_ISO_FILE=/,/RUN rm -f install\.iso/d' \
        -e '/^COPY support\/start-node/a COPY system.qcow2 .' \
        -e 's/^FROM .*$/FROM amazonlinux:2/g' \
        -e '/RUN \[ -n "\$PRODUCT_KEY" \]/d' \
  >> local-build.$PROFILE.docker

# disable debugging mode
set +x

# show build instructions
echo
echo "################################################################################"
echo "# Local build scripts have been successfully generated"
echo "################################################################################"
echo
echo "Review produced local build scripts (IMPORTANT):"
echo "    less ./local-build.$PROFILE.sh"
echo "    less ./local-build.$PROFILE.docker"
echo
echo "Run local build script:"
echo "    PRODUCT_KEY=ABCDE-ABCDE-ABCDE-ABCDE-ABCDE ./local-build.$PROFILE.sh"
echo
echo "Finish in Docker:"
echo "    docker build -f local-build.$PROFILE.docker -t $PROFILE build.$PROFILE"
echo