mailcow-dockerized-docs/docs/i_u_m_update.md
2020-02-08 12:56:48 +01:00

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## Automatic update
An update script in your mailcow-dockerized directory will take care of updates.
But use it with caution! If you think you made a lot of changes to the mailcow code, you should use the manual update guide below.
Run the update script:
```
./update.sh
```
If it needs to, it will ask you how you wish to proceed.
Merge errors will be reported.
Some minor conflicts will be auto-corrected (in favour for the mailcow: dockerized repository code).
### Options
```
# Check for updates
./update.sh --check
# Update with merge strategy "ours" instead of "theirs"
# This will merge in favor for your local changes.
./update.sh --ours
# Don't update, but prefetch images and exit
./update.sh --prefetch
```
## Manual update (not maintained anymore, please use update.sh)
### Step 1
```
docker-compose down
```
Fetch new data from GitHub, commit changes and merge remote repository:
```
# 1. Get updates/changes
git fetch origin master
# 2. Add all changed files to local clone
git add -A
# 3. Commit changes, ignore git complaining about username and mail address
git commit -m "Local config at $(date)"
# 4. Merge changes, prefer mailcow repository, replace "theirs" by "ours" to change merge strategy
git merge -Xtheirs -Xpatience
# If it conflicts with files that were deleted from the mailcow repository, just run...
git status --porcelain | grep -E "UD|DU" | awk '{print $2}' | xargs rm -v
# ...and repeat step 2 and 3
```
### Step 2
Pull new images (if any) and recreate changed containers:
```
docker-compose pull
docker-compose up -d --remove-orphans
```
### Step 3
Clean-up dangling (unused) images and volumes:
It is **very important** to _not_ run these commands when your containers are deleted.
Running `docker-compose down` - for example - will delete your containers. Your volumes are now in a dangling state! Running the commands shown below, _will_ remove your volumes and therefore your data.
```
docker rmi -f $(docker images -f "dangling=true" -q)
docker volume rm $(docker volume ls -qf dangling=true)
```
## Footnotes
- There is no release cycle regarding updates.