initial commit
This commit is contained in:
Madison Grubb
@@ -0,0 +1,212 @@
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#!/usr/bin/env sh
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set -u
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usage() {
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cat <<EOF
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Usage: $0 [options]
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Environment-backed options (CLI flags are optional):
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--owner VALUE (default: \$IMAGE_LABEL_OWNER)
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--repository VALUE (default: \$IMAGE_LABEL_REPO)
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--slug VALUE (default: catthehacker/ubuntu)
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--tags TAG [TAG ...] Multiple destination tags
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--tag TAG Single destination tag
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--node VALUE (default: \$NODE)
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--distro VALUE (default: ubuntu)
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--type VALUE (default: \$TYPE)
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--runner VALUE (default: \$RUNNER)
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--platforms CSV (default: \$PLATFORMS, comma-separated)
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--build-tag VALUE (default: \$BUILD_TAG)
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--build-tag-version VAL (default: \$BUILD_TAG_VERSION)
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--build-ref VALUE (default: \$BUILD_REF)
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--from-image VALUE (default: \$FROM_IMAGE)
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--from-tag VALUE (default: \$FROM_TAG)
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--push Push manifest to remote registries
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-h, --help Show this help and exit
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EOF
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}
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# Defaults from environment (mirrors build.ps1 parameter defaults), with safe fallbacks
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owner=${IMAGE_LABEL_OWNER:-actions}
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repository=${IMAGE_LABEL_REPO:-ubuntu}
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tags=""
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tag=""
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node=${NODE:-"20 24"}
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distro='ubuntu'
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type=${TYPE:-act}
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runner=${RUNNER:-root}
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platforms=${PLATFORMS:-linux/amd64,linux/arm64}
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build_tag=${BUILD_TAG:-act-24.04}
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build_tag_version=${BUILD_TAG_VERSION:-dev}
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build_ref=${BUILD_REF:-local}
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from_image=${FROM_IMAGE:-buildpack-deps}
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from_tag=${FROM_TAG:-24.04}
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push=false
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# Argument parsing (simple long options, designed to be close to build.ps1 semantics)
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while [ "$#" -gt 0 ]; do
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case "$1" in
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--owner)
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owner=$2
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shift 2
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;;
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--repository)
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repository=$2
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shift 2
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;;
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--tags)
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shift
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# Collect all following non-option arguments as tags
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while [ "$#" -gt 0 ] && [ "${1#-}" = "$1" ]; do
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if [ -z "$tags" ]; then
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tags=$1
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else
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tags="$tags $1"
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fi
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shift
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done
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;;
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--tag)
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tag=$2
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shift 2
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;;
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--node)
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node=$2
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shift 2
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;;
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--distro)
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distro=$2
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shift 2
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;;
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--type)
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type=$2
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shift 2
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;;
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--runner)
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runner=$2
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shift 2
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;;
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--platforms)
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platforms=$2
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shift 2
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;;
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--build-tag)
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build_tag=$2
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shift 2
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;;
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--build-tag-version)
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build_tag_version=$2
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shift 2
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;;
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--build-ref)
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build_ref=$2
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shift 2
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;;
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--from-image)
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from_image=$2
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shift 2
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;;
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--from-tag)
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from_tag=$2
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shift 2
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;;
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--push)
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push=true
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shift
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;;
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-h|--help)
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usage
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exit 0
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;;
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*)
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printf 'Unknown argument: %s\n' "$1" >&2
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usage
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exit 1
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;;
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esac
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done
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# Helper to run a command and fail with a useful message (equivalent to exec in build.ps1)
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exec_cmd() {
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if ! "$@"; then
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status=$?
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printf '%s failed with exit code %s\n' "$*" "$status" >&2
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exit "$status"
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fi
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}
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if [ -z "$platforms" ]; then
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printf 'Error: PLATFORMS is empty. Set PLATFORMS or pass --platforms.\n' >&2
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exit 1
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fi
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if [ -z "$from_image" ] || [ -z "$from_tag" ]; then
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printf 'Error: FROM_IMAGE/FROM_TAG are empty. Set env vars or pass --from-image/--from-tag.\n' >&2
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exit 1
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fi
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if [ "$push" = true ]; then
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# Combine tags and tag (if provided)
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all_tags=$tags
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if [ -n "$tag" ]; then
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if [ -z "$all_tags" ]; then
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all_tags=$tag
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else
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all_tags="$all_tags $tag"
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fi
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fi
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else
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# Even when not pushing, honor --tag so the local image is named.
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all_tags=$tags
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if [ -n "$tag" ]; then
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if [ -z "$all_tags" ]; then
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all_tags=$tag
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else
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all_tags="$all_tags $tag"
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fi
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fi
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fi
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# Buildx expects comma-separated --platform list; reuse platforms as-is.
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tag_args=""
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for t in $all_tags; do
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tag_args="$tag_args -t $t"
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done
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build_date=$(date -u +"%Y-%m-%d %H:%M:%SZ")
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# Build argument vector to preserve spacing/quoting (e.g. NODE_VERSION="20 24")
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set -- docker buildx build \
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--ulimit "nofile=4096:4096" \
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--platform "$platforms" \
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--build-arg "TARGETARCH=\$TARGETARCH" \
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--build-arg "NODE_VERSION=$node" \
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--build-arg "DISTRO=$distro" \
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--build-arg "TYPE=$type" \
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--build-arg "RUNNER=$runner" \
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--build-arg "BUILD_DATE=$build_date" \
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--build-arg "BUILD_OWNER=$owner" \
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--build-arg "BUILD_OWNER_MAIL=$owner" \
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--build-arg "BUILD_REPO=$repository" \
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--build-arg "BUILD_TAG=$build_tag" \
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--build-arg "BUILD_TAG_VERSION=$build_tag_version" \
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--build-arg "BUILD_REF=$build_ref" \
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--build-arg "FROM_IMAGE=$from_image" \
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--build-arg "FROM_TAG=$from_tag" \
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--file "./Dockerfile"
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# Append tag flags
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# shellcheck disable=SC2086
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set -- "$@" $tag_args
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# Append push/load and final PATH argument
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if [ "$push" = true ]; then
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set -- "$@" --push .
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else
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set -- "$@" --load .
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fi
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exec_cmd "$@"
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