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fix: Refactor preinstall script to use useradd if adduser is not available #2858

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merged 1 commit into from
Jul 8, 2022
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fix: Refactor preinstall script to use useradd if adduser is not available #2858

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21 changes: 13 additions & 8 deletions preinstall.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -3,22 +3,27 @@ set -eu

USER="coder"

# Add a Coder user to run as in systemd.
if ! id -u $USER >/dev/null 2>&1; then
if id -u $USER >/dev/null 2>&1; then
# If the coder user already exists, we don't need to add it.
exit 0
fi

if command -V useradd >/dev/null 2>&1; then
useradd \
--create-home \
--system \
--user-group \
--shell /bin/false \
$USER

# Add the Coder user to the Docker group.
# Coder is frequently used with Docker, so
# this prevents failures when building.
#
# It's fine if this fails!
usermod \
--append \
--groups docker \
$USER 2>/dev/null || true
$USER >/dev/null 2>&1 || true
elif command -V adduser >/dev/null 2>&1; then
# On alpine distributions useradd does not exist.
# This is a backup!
addgroup -S $USER
adduser -G coder -S coder
adduser coder docker >/dev/null 2>&1 || true
fi