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docker: Add support for setting umask (#9429)
Add support for setting umask value in the Docker `entrypoint.sh` script. This is useful when not syncing permissions and working with groups, and needing umask values like `002` instead of `022`.
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@ -15,6 +15,9 @@ To grant Syncthing additional capabilities without running as root, use the
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`PCAP` environment variable with the same syntax as that for `setcap(8)`.
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`PCAP` environment variable with the same syntax as that for `setcap(8)`.
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For example, `PCAP=cap_chown,cap_fowner+ep`.
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For example, `PCAP=cap_chown,cap_fowner+ep`.
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To set a different umask value, use the `UMASK` environment variable. For
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example `UMASK=002`.
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## Example Usage
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## Example Usage
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**Docker cli**
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**Docker cli**
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@ -2,9 +2,11 @@
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set -eu
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set -eu
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[ -n "${UMASK:-}" ] && umask "$UMASK"
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if [ "$(id -u)" = '0' ]; then
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if [ "$(id -u)" = '0' ]; then
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binary="$1"
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binary="$1"
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if [ "${PCAP:-}" == "" ] ; then
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if [ -z "${PCAP:-}" ]; then
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# If Syncthing should have no extra capabilities, make sure to remove them
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# If Syncthing should have no extra capabilities, make sure to remove them
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# from the binary. This will fail with an error if there are no
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# from the binary. This will fail with an error if there are no
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# capabilities to remove, hence the || true etc.
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# capabilities to remove, hence the || true etc.
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