refactor: reorganize scripts under bash/python

scripts/bash/mysql-entrypoint.sh

@@ -0,0 +1,96 @@
+#!/bin/bash
+# Wrapper entrypoint to adapt MySQL container UID/GID to match host user expectations.
+set -euo pipefail
+
+ORIGINAL_ENTRYPOINT="${MYSQL_ORIGINAL_ENTRYPOINT:-docker-entrypoint.sh}"
+if ! command -v "$ORIGINAL_ENTRYPOINT" >/dev/null 2>&1; then
+  # Fallback to common install path
+  if [ -x /usr/local/bin/docker-entrypoint.sh ]; then
+    ORIGINAL_ENTRYPOINT=/usr/local/bin/docker-entrypoint.sh
+  fi
+fi
+
+TARGET_SPEC="${MYSQL_RUNTIME_USER:-${CONTAINER_USER:-}}"
+if [ -z "${TARGET_SPEC:-}" ] || [ "${TARGET_SPEC}" = "0:0" ]; then
+  exec "$ORIGINAL_ENTRYPOINT" "$@"
+fi
+
+if [[ "$TARGET_SPEC" != *:* ]]; then
+  echo "mysql-entrypoint: Expected MYSQL_RUNTIME_USER/CONTAINER_USER in uid:gid form, got '${TARGET_SPEC}'" >&2
+  exit 1
+fi
+
+IFS=':' read -r TARGET_UID TARGET_GID <<< "$TARGET_SPEC"
+
+if ! [[ "$TARGET_UID" =~ ^[0-9]+$ ]] || ! [[ "$TARGET_GID" =~ ^[0-9]+$ ]]; then
+  echo "mysql-entrypoint: UID/GID must be numeric (received uid='${TARGET_UID}' gid='${TARGET_GID}')" >&2
+  exit 1
+fi
+
+if ! id mysql >/dev/null 2>&1; then
+  echo "mysql-entrypoint: mysql user not found in container" >&2
+  exit 1
+fi
+
+current_uid="$(id -u mysql)"
+current_gid="$(id -g mysql)"
+
+# Adjust group if needed
+target_group_name=""
+if [ "$current_gid" != "$TARGET_GID" ]; then
+  if groupmod -g "$TARGET_GID" mysql 2>/dev/null; then
+    target_group_name="mysql"
+  else
+    existing_group="$(getent group "$TARGET_GID" | cut -d: -f1 || true)"
+    if [ -z "$existing_group" ]; then
+      existing_group="mysql-host"
+      if ! getent group "$existing_group" >/dev/null 2>&1; then
+        groupadd -g "$TARGET_GID" "$existing_group"
+      fi
+    fi
+    usermod -g "$existing_group" mysql
+    target_group_name="$existing_group"
+  fi
+else
+  target_group_name="$(getent group mysql | cut -d: -f1)"
+fi
+
+if [ -z "$target_group_name" ]; then
+  target_group_name="$(getent group "$TARGET_GID" | cut -d: -f1 || true)"
+fi
+
+# Adjust user UID if needed
+if [ "$current_uid" != "$TARGET_UID" ]; then
+  if getent passwd "$TARGET_UID" >/dev/null 2>&1 && [ "$(getent passwd "$TARGET_UID" | cut -d: -f1)" != "mysql" ]; then
+    echo "mysql-entrypoint: UID ${TARGET_UID} already in use by $(getent passwd "$TARGET_UID" | cut -d: -f1)." >&2
+    echo "mysql-entrypoint: Please choose a different CONTAINER_USER or adjust the image." >&2
+    exit 1
+  fi
+  usermod -u "$TARGET_UID" mysql
+fi
+
+# Ensure group lookup after potential changes
+target_group_name="$(getent group "$TARGET_GID" | cut -d: -f1 || echo "$target_group_name")"
+
+# Update ownership on relevant directories if they exist
+for path in /var/lib/mysql-runtime /var/lib/mysql /var/lib/mysql-persistent /backups; do
+  if [ -e "$path" ]; then
+    chown -R mysql:"$target_group_name" "$path"
+  fi
+done
+
+disable_binlog="${MYSQL_DISABLE_BINLOG:-}"
+if [ "${disable_binlog}" = "1" ]; then
+  add_skip_flag=1
+  for arg in "$@"; do
+    if [ "$arg" = "--skip-log-bin" ] || [[ "$arg" == --log-bin* ]]; then
+      add_skip_flag=0
+      break
+    fi
+  done
+  if [ "$add_skip_flag" -eq 1 ]; then
+    set -- "$@" --skip-log-bin
+  fi
+fi
+
+exec "$ORIGINAL_ENTRYPOINT" "$@"