9079079092
The docker-run script attempts to support git-new-workdirs and git-worktrees by resolving the symlink at '$GIT_DIR/config' to get the true $GIT_DIR. However this does not work for git-worktrees as they do not use symlinks, instead they change the $GIT_DIR into a regular file that contains the path to the real $GIT_DIR. To complicate things further, we actually want the $GIT_COMMON_DIR which is the superset of a worktree's $GIT_DIR. git-rev-parse supports the '--git-common-dir' which will resolve the $GIT_COMMON_DIR for us. However it does not work for git-new-workdirs, so we still need to detect and handle them. '--git-common-dir' also appeared only with git 2.10.0, released in 2016, so it will not be available in older "enterprise-grade" distributions. In that case, 'git rev-parse --git-common-dir' would return the option flag '--git-common-dir' as-is, which is incorrect. So, we instruct it to never return flags. '--git-common-dir' also returns just '.git' for the main working copy, but 'docker run' want an absolute path, so we canonicalise it. Signed-off-by: Brandon Maier <brandon.maier@collins.com> [yann.morin.1998@free.fr: - support git versions before --git-common-dir was introduced - don't mount GIT_DIR if unknown (i.e. not needed) - fix expanding MAIN_DIR ] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
41 lines
1.3 KiB
Bash
Executable File
41 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -o errexit -o pipefail
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DIR=$(dirname "${0}")
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MAIN_DIR=$(readlink -f "${DIR}/..")
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if [ -L "${MAIN_DIR}/.git/config" ]; then
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# Support git-new-workdir
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GIT_DIR="$(dirname "$(realpath "${MAIN_DIR}/.git/config")")"
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else
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# Support git-worktree
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GIT_DIR="$(cd "${MAIN_DIR}" && git rev-parse --no-flags --git-common-dir)"
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fi
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# shellcheck disable=SC2016
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IMAGE=$(grep ^image: "${MAIN_DIR}/.gitlab-ci.yml" | \
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sed -e 's,^image: ,,g' | sed -e 's,\$CI_REGISTRY,registry.gitlab.com,g')
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declare -a docker_opts=(
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-i
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--rm
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--user "$(id -u):$(id -g)"
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--mount "type=bind,src=${MAIN_DIR},dst=${MAIN_DIR}"
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--workdir "${MAIN_DIR}"
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)
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# Empty GIT_DIR means that we are not in a workdir, *and* git is too old
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# to know about worktrees, so we're not in a worktree either. So it means
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# we're in the main git working copy, and thus we don't need to mount the
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# .git directory.
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if [ "${GIT_DIR}" ]; then
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# GIT_DIR in the main working copy (when git supports worktrees) will
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# be just '.git', but 'docker run' needs an absolute path. If it's an
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# absolute path already (in a wordir), then that's a noop.
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GIT_DIR="$(readlink -e "${GIT_DIR}")"
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docker_opts+=( --mount "type=bind,src=${GIT_DIR},dst=${GIT_DIR}" )
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fi
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if tty -s; then
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docker_opts+=( -t )
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fi
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exec docker run "${docker_opts[@]}" "${IMAGE}" "${@}"
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