45 lines
1.4 KiB
Bash
Executable File
45 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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set -e +x
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if [[ ! $1 ]]; then
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echo "Usage: $0 CONTAINER [tar-extraction-flags]"
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echo "Usage: $0 quay.io/crw/operator-metadata:latest"
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echo "Usage: $0 quay.io/crw/devfileregistry-rhel8:latest var/www/html/*/external_images.txt"
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echo "Usage: $0 quay.io/crw/pluginregistry-rhel8:latest var/www/html/*/external_images.txt"
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exit
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fi
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PODMAN=$(command -v podman)
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if [[ ! -x $PODMAN ]]; then
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echo "[WARNING] podman is not installed."
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PODMAN=$(command -v docker)
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if [[ ! -x $PODMAN ]]; then
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echo "[ERROR] docker is not installed. Aborting."; exit 1
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fi
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fi
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container="$1"; shift 1
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tmpcontainer="$(echo $container | tr "/:" "--")-$(date +%s)"
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unpackdir="/tmp/${tmpcontainer}"
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# get remote image
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echo "[INFO] Pulling $container ..."
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${PODMAN} pull $container 2>&1
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# create local container
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${PODMAN} rm -f "${tmpcontainer}" 2>&1 >/dev/null || true
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# use sh for regular containers or ls for scratch containers
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${PODMAN} create --name="${tmpcontainer}" $container sh 2>&1 >/dev/null || ${PODMAN} create --name="${tmpcontainer}" $container ls 2>&1 >/dev/null
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# export and unpack
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${PODMAN} export "${tmpcontainer}" > /tmp/${tmpcontainer}.tar
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rm -fr "$unpackdir"; mkdir -p "$unpackdir"
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echo "[INFO] Extract from container ..."
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tar xf /tmp/${tmpcontainer}.tar --wildcards -C "$unpackdir" $*
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# cleanup
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${PODMAN} rm -f "${tmpcontainer}" 2>&1 >/dev/null || true
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rm -fr /tmp/${tmpcontainer}.tar
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echo "[INFO] Container $container unpacked to $unpackdir"
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