82 lines
2.8 KiB
Bash
82 lines
2.8 KiB
Bash
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#!/bin/bash
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set -e
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# ──────────────────────────────────────────────
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# GSD Container Entrypoint
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#
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# Responsibilities:
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# 1. UID/GID remapping — match host user via PUID/PGID
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# 2. Pre-create critical files — prevent Docker bind-mount
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# from creating directories where files are expected
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# 3. Sentinel-based bootstrap — one-time first-boot setup
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# 4. Signal forwarding — exec into the final process
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# ──────────────────────────────────────────────
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GSD_USER="gsd"
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GSD_HOME="/home/${GSD_USER}"
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GSD_DIR="${GSD_HOME}/.gsd"
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# ── 1. UID/GID Remapping ────────────────────────────────
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# Accept PUID/PGID from the environment so the container
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# can run with the same UID/GID as the host user, avoiding
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# permission headaches on bind-mounted volumes.
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PUID="${PUID:-1000}"
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PGID="${PGID:-1000}"
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CURRENT_UID=$(id -u "${GSD_USER}")
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CURRENT_GID=$(id -g "${GSD_USER}")
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REMAPPED=0
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if [ "${PGID}" != "${CURRENT_GID}" ]; then
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groupmod -o -g "${PGID}" "${GSD_USER}"
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REMAPPED=1
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fi
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if [ "${PUID}" != "${CURRENT_UID}" ]; then
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usermod -o -u "${PUID}" "${GSD_USER}"
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REMAPPED=1
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fi
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# Fix ownership only when UID/GID actually changed
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if [ "${REMAPPED}" -eq 1 ]; then
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chown -R "${PUID}:${PGID}" "${GSD_HOME}"
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chown "${PUID}:${PGID}" /workspace
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fi
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# ── 2. Pre-create Critical Files ────────────────────────
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# Docker bind-mounts will create a *directory* if the target
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# path doesn't exist. We need these to be files, so touch
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# them before Docker gets a chance to mangle things.
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mkdir -p "${GSD_DIR}"
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if [ ! -f "${GSD_DIR}/settings.json" ]; then
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echo '{}' > "${GSD_DIR}/settings.json"
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fi
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chown "${PUID}:${PGID}" "${GSD_DIR}" "${GSD_DIR}/settings.json"
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# ── 3. Sentinel-based Bootstrap ─────────────────────────
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# Run first-boot setup exactly once. Subsequent container
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# starts (or restarts) skip this entirely.
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SENTINEL="${GSD_DIR}/.bootstrapped"
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if [ ! -f "${SENTINEL}" ]; then
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if [ -x /usr/local/bin/bootstrap.sh ]; then
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# Run bootstrap as the gsd user so files get correct ownership
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gosu "${GSD_USER}" /usr/local/bin/bootstrap.sh
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fi
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touch "${SENTINEL}"
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chown "${PUID}:${PGID}" "${SENTINEL}"
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fi
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# ── 4. Drop Privileges & Exec ──────────────────────────
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# Replace this shell process with the final command running
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# as the gsd user. exec + gosu = proper PID 1 = proper
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# signal forwarding (SIGTERM, SIGINT, etc.).
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exec gosu "${GSD_USER}" "$@"
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