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98 lines
2.8 KiB
98 lines
2.8 KiB
#!/bin/bash
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################################################################################
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# Functions/variables
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quit() {
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if [[ $1 == 0 || $FLAGS_debug == $FLAGS_FALSE ]]; then
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podman rm -i -f tmp-$epoch 2>&1 > /dev/null
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fi
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exit $1
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}
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epoch=$(date +%s.%3N)
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today=$(date +%Y-%m-%d-T%H%M)
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# Handle flags
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source shflags
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DEFINE_boolean 'squash' false 'squash newly built layers into a single new layer' 's'
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DEFINE_boolean 'debug' false "Don't delete temporary container on build fail" 'd'
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DEFINE_string 'tag' 'latest' 'Tag (other than date) to assign to the image' 't'
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FLAGS_HELP="Usage: $0 [-sd] [-t tag] [directory] [name]
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Builds an image from the Containerfile and (optionally) Systemdfile in the
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specified directory, and tags the image with the given name. If no directory
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argument is given, the current working directory is used. If no name argument
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is given, the image is named after the directory.
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"
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FLAGS "$@" || exit $?
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eval set -- "${FLAGS_ARGV}"
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# Handle errors/arguments/cases
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if [[ $# -gt 2 ]]; then
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echo "Error: too many arguments"
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echo ""
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flags_help
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exit 1
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fi
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if [[ -n $1 ]]; then
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directory=$1
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else
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directory=$(pwd)
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fi
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if [[ ! -d $directory ]]; then
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echo "Error: directory \"$directory\" not found"
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echo ""
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flags_help
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exit 1
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else
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cd $directory
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fi
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if [[ -n $2 ]]; then
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name=$2
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else
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name=$(basename $(pwd))
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fi
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# build options
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buildopts=""
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if [[ $FLAGS_squash == $FLAGS_TRUE ]]; then
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buildopts="$buildopts --squash"
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fi
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# Main
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# tell buildah to build images in docker format instead of the default OCI format
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# because only docker-format images can use the SHELL directive in Containerfiles
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export BUILDAH_FORMAT=docker
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# build image
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echo "Building image ..."
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podman build -f Containerfile -t tmp-$epoch $buildopts || quit $?
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# Systemdfile is for commands that need systemd to execute
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if [[ -f Systemdfile ]]; then
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echo "Running build steps that require systemd ..."
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echo "Creating container ..."
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podman create --name tmp-$epoch tmp-$epoch || quit $?
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podman start tmp-$epoch || quit $?
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echo "Copying script to container ..."
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podman cp Systemdfile tmp-$epoch:/root/
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echo "Running script ..."
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podman exec tmp-$epoch bash -c "chmod +x /root/Systemdfile && /root/Systemdfile" || quit $?
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echo "Committing container to image ..."
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podman commit tmp-$epoch $name:$today || quit $?
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else
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echo "Systemdfile not found, skipping container creation ..."
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# tag image we already built with appropriate tag, and untag with tmp
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podman tag tmp-$epoch $name:$today
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podman rmi tmp-$epoch
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fi
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# tag with latest tag
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podman tag $name:$today $name:$FLAGS_tag
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echo "Done!"
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quit 0
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