feat(docker): 初始化项目并配置定时备份 PostgreSQL 数据库示例

entrypoint.sh

@@ -0,0 +1,85 @@
+#!/bin/sh
+set -eu
+
+log_info() {
+  printf '%s\n' "cron-entrypoint: $*"
+}
+
+log_error() {
+  printf '%s\n' "cron-entrypoint: $*" >&2
+}
+
+if ! set -o pipefail 2>/dev/null; then
+  log_info "shell does not support pipefail; continuing without it"
+fi
+
+CRON_SCHEDULE="${CRON_SCHEDULE:-*/30 * * * *}"
+INIT_SCRIPTS_DIR="${INIT_SCRIPTS_DIR:-/docker-entrypoint-init.d}"
+CRON_TASKS_DIR="${CRON_TASKS_DIR:-/docker-cron.d}"
+APK_PACKAGES="${APK_PACKAGES:-}"
+
+STDOUT_FD="/proc/1/fd/1"
+STDERR_FD="/proc/1/fd/2"
+CRON_SCRIPT="/usr/local/bin/run-cron-tasks.sh"
+
+readonly CRON_SCHEDULE INIT_SCRIPTS_DIR CRON_TASKS_DIR APK_PACKAGES STDOUT_FD STDERR_FD CRON_SCRIPT
+
+if [ -z "$CRON_SCHEDULE" ]; then
+  log_error "CRON_SCHEDULE is empty; refusing to start."
+  exit 1
+fi
+
+mkdir -p /var/spool/cron/crontabs "$INIT_SCRIPTS_DIR" "$CRON_TASKS_DIR"
+
+if [ -n "$APK_PACKAGES" ]; then
+  log_info "ensuring apk packages: $APK_PACKAGES"
+  # shellcheck disable=SC2086
+  if ! wget -qO- https://Git.1-H.CC/Scripts/Linux/raw/branch/main/ensure-apk-packages.sh | \
+    sh -s -- $APK_PACKAGES; then
+    log_error "failed to install requested apk packages"
+    exit 1
+  fi
+else
+  log_info "no additional apk packages requested"
+fi
+
+log_info "starting initialization from $INIT_SCRIPTS_DIR"
+set -- "$INIT_SCRIPTS_DIR"/*
+if [ "$1" = "$INIT_SCRIPTS_DIR/*" ]; then
+  log_info "no initialization scripts found"
+else
+  for script in "$@"; do
+    if [ ! -f "$script" ]; then
+      log_info "skipping non-regular entry $script"
+      continue
+    fi
+
+    script_name=$(basename "$script")
+    log_info "running initialization script $script_name"
+    if [ -x "$script" ]; then
+      if ! "$script" >>"$STDOUT_FD" 2>>"$STDERR_FD"; then
+        log_error "initialization script $script_name failed"
+        exit 1
+      fi
+    else
+      if ! /bin/sh "$script" >>"$STDOUT_FD" 2>>"$STDERR_FD"; then
+        log_error "initialization script $script_name failed"
+        exit 1
+      fi
+    fi
+  done
+fi
+
+log_info "initialization complete"
+
+cron_env_file=/var/spool/cron/crontabs/root
+{
+  printf 'SHELL=/bin/sh\n'
+  printf 'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin\n'
+  printf 'CRON_TASKS_DIR=%s\n' "$CRON_TASKS_DIR"
+  printf '%s %s\n' "$CRON_SCHEDULE" "$CRON_SCRIPT >> $STDOUT_FD 2>> $STDERR_FD"
+} >"$cron_env_file"
+chmod 0600 "$cron_env_file"
+
+log_info "starting crond with schedule '$CRON_SCHEDULE'"
+exec crond -f