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#!/usr/bin/bash
action() {
local OPTIND
local base_image
local base_tag
local output_tag
local dockerfile
local template
local install_options
while getopts ":B:b:f:T:t:" opt
do
case "$opt" in
b) RSTAR_BACKEND=$OPTARG ;;
B) base_image=$OPTARG ;;
T) base_tag=$OPTARG ;;
t) output_tag=$OPTARG ;;
f) template=$OPTARG ;;
*) emerg "Invalid option specified: $opt" ;;
esac
done
# Base image must be specified
if [[ -z $base_image ]]
then
emerg "Must specify a base image with -B"
exit 2
fi
# Tag of base image defaults to 'latest'
[[ -z $base_tag ]] && base_tag="latest"
# Set a default tag for the built image with relevant information
if [[ -z "$output_tag" ]]
then
output_tag="rakudo:$base_image-$base_tag"
if [[ ! -z $RSTAR_BACKEND ]]
then
output_tag="$output_tag-$RSTAR_BACKEND"
fi
fi
dockerfile=$(tempfile)
# We use the Dockerfile template for this image + tag pair if it exists,
# or use the image default template
if [[ -z $template ]] && [[ -f "$BASEDIR/lib/docker/$base_image/$base_tag" ]]
then
template="$BASEDIR/lib/docker/$base_image/$base_tag"
else
if [[ -f "$BASEDIR/lib/docker/$base_image" ]]
then
template="$BASEDIR/lib/docker/$base_image"
else
# Die if we have not found a template to use
emerg "No Dockerfile template found for '$base_image:$base_tag'!"
exit 2
fi
fi
# Fill in template placeholders
if [[ ! -z $RSTAR_BACKEND ]]
then
install_options="$install_options -b "'"'"$RSTAR_BACKEND"'"'
fi
sed < "$template" > "$dockerfile" \
-e "s/{{INSTALL_OPTIONS}}/$install_options/" \
-e "s/{{TAG}}/$base_tag/"
# Build the image with the generated Dockerfile
docker build -t "$output_tag" -f "$dockerfile" "$BASEDIR"
shift $(( OPTIND -1 ))
}
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