Update Ghost on Docker
Guideline for updating Ghost 5.x hosted as docker container
Applicable Ghost Version: 5.x
Backup Data
Content
cd /var/www/ghost/content
Compress content
contents zip -r content-files.zip images/ files/ media/
(Optional)Move the zip files from your server onto your local machine.
scp user@remote_IP:/var/www/ghost/content/content-files.zip ~/Desktop/content-files.zip
Built-in Export
In the ghost admin dashboard, find:
Settings => Labs => Export your content
A json file will be generated that can be imported back in a fresh Ghost installation if anything goes wrong.
(Optional)Database
docker exec db_container_name mysqldump [--user yourusername] [--password=yourpassword] databasename > /desired/path/to/db.dump
Update Docker Container
Run the following steps one by one:
docker-compose down
docker-compose pull
docker-compose up -d
Update Failed
If there are issues after the update and a big gap between the existing and latest ghost versions, it is likely such a version jump is not supported properly.
Check all available versions. Minimising the version gap, and repeating the update step multiple times will likely resolve the issue.
Ghost runs the update migration process during the first fire-up of the program, thus the sequence of updates is significant.