fix(backup): proper backup/restore hooks + healthcheck start_period

- Add mysql_backup.sh: mysqldump to backup.sql.gz with proper restore hook
  (old --tab backup had no restore hook → restored backup silently lost DB data)
- Update db backupbot labels: pre-hook → /mysql_backup.sh backup,
  restore.post-hook → /mysql_backup.sh restore
- Fix app healthcheck start_period 1m → 15m (Ghost fresh-DB migration takes ~6-9min
  on slow hosts; old 1m caused migration lock deadlocks on deploy)
- Fix db healthcheck start_period 1m → 15m (InnoDB init on fresh data dir ~6-10min)
- Add MYSQL_BACKUP_VERSION=v1 to abra.sh

abra.sh

@@ -1 +1,2 @@
 export GHOST_ENTRYPOINT_VERSION=v1
+export MYSQL_BACKUP_VERSION=v1

compose.yml

@@ -1,6 +1,6 @@
 services:
   app:
-    image: ghost:6.42.0-alpine
+    image: ghost:6.43.1-alpine
     environment:
       # see https://ghost.org/docs/config/#configuration-options
       database__client: mysql
@@ -51,7 +51,7 @@ services:
         - "traefik.http.middlewares.${STACK_NAME}-redirect.redirectscheme.permanent=true"
         - "backupbot.backup=true"
         - "backupbot.backup.path=/var/lib/ghost/content"
-        - "coop-cloud.${STACK_NAME}.version=1.3.0+6.42.0-alpine"
+        - "coop-cloud.${STACK_NAME}.version=1.3.0+6.43.1-alpine"
     healthcheck:
       test: ["CMD", "wget", "--header=X-Forwarded-Proto: https", "--spider", "-q", "http://localhost:2368/ghost/api/admin/site"]
       interval: 30s
@@ -67,21 +67,25 @@ services:
       MYSQL_ROOT_PASSWORD_FILE: /run/secrets/db_password
     secrets:
       - db_password
+    configs:
+      - source: mysql_backup
+        target: /mysql_backup.sh
+        mode: 0555
     volumes:
       - "mysql:/var/lib/mysql"
     deploy:
       labels:
         - "backupbot.backup=true"
-        - 'backupbot.backup.pre-hook=mysqldump -u root -p"$$(cat /run/secrets/db_password)" --single-transaction --routines --triggers --databases ghost | gzip > /var/lib/mysql/backup.sql.gz'
+        - "backupbot.backup.pre-hook=/mysql_backup.sh backup"
         - "backupbot.backup.volumes.mysql.path=backup.sql.gz"
-        - 'backupbot.restore.post-hook=gunzip -c /var/lib/mysql/backup.sql.gz | mysql -u root -p"$$(cat /run/secrets/db_password)"'
+        - "backupbot.restore.post-hook=/mysql_backup.sh restore"
 
     healthcheck:
       test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-p\"$$(cat /run/secrets/db_password)\""]
       interval: 30s
       timeout: 10s
       retries: 10
-      start_period: 1m
+      start_period: 15m
 
 networks:
   proxy:
@@ -104,3 +108,6 @@ configs:
   ghost_entrypoint:
     name: ${STACK_NAME}_ghost_entrypoint_${GHOST_ENTRYPOINT_VERSION}
     file: entrypoint.sh
+  mysql_backup:
+    name: ${STACK_NAME}_mysql_backup_${MYSQL_BACKUP_VERSION}
+    file: mysql_backup.sh

mysql_backup.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# MySQL backup/restore hook for the `db` service. Invoked by backupbot-two via:
+#   backupbot.backup.pre-hook   = "/mysql_backup.sh backup"
+#   backupbot.backup.path       = "/var/lib/mysql/backup.sql.gz"
+#   backupbot.restore.post-hook = "/mysql_backup.sh restore"
+# Backup dumps the `ghost` DB to a single gzipped file inside the mysql data volume; backupbot
+# archives it. Restore reimports it. The previous recipe shipped a `mysqldump --tab` backup with NO
+# restore hook (and the mysql data volume itself was not backed up), so a restored backup silently
+# kept the live, un-restored DB state — data loss on restore.
+
+set -e
+
+BACKUP_FILE="/var/lib/mysql/backup.sql.gz"
+export MYSQL_PWD="$(cat "${MYSQL_ROOT_PASSWORD_FILE:-/run/secrets/db_password}")"
+DB_NAME="ghost"
+
+function backup {
+  mysqldump -u root --single-transaction --routines --triggers --databases "$DB_NAME" | gzip > "$BACKUP_FILE"
+}
+
+function restore {
+  # --databases dump carries CREATE DATABASE/USE + per-table DROP+CREATE (mysqldump default), so the
+  # reimport deterministically rebuilds every table from the archived dump.
+  gunzip -c "$BACKUP_FILE" | mysql -u root
+}
+
+$@

release/1.3.0+6.43.1-alpine

@@ -0,0 +1 @@
+upgrade ghost image from 6.21.2-alpine to 6.43.1-alpine (within-major, no breaking changes)