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Updating minecraft-server README with SEED and MODE options

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Geoff Bourne
2015-01-01 09:22:59 -06:00
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minecraft-server/README.md
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@@ -64,29 +64,61 @@ or a specific version:
## Server configuration
You can either switch between world saves or run multiple containers with different saves by using the `LEVEL` option,
where the default is "world":
docker run -d -e LEVEL=bonus ...
**NOTE:** if running multiple containers be sure to either specify a different `-v` host directory for each
`LEVEL` in use or don't use `-v` and the container's filesystem will keep things encapsulated.
The message of the day, shown below each server entry in the UI, can be changed with the `MOTD` environment variable, such as
docker run -d -e 'MOTD=My Server' ...
If you leave it off, the last used or default message will be used. _The example shows how to specify a server
message of the day that contains spaces by putting quotes around the whole thing._
### Op/Administrator Players
To add more "op" (aka adminstrator) users to your Minecraft server, pass the Minecraft usernames separated by commas via the `OPS` environment variable, such as
docker run -d -e OPS=user1,user2 ...
### Server icon
A server icon can be configured using the `ICON` variable. The image will be automatically
downloaded, scaled, and converted from any other image format:
docker run -d -e ICON=http://..../some/image.png
docker run -d -e ICON=http://..../some/image.png ...
### Level Seed
If you want to create the Minecraft level with a specific seed, use `SEED`, such as
docker run -d -e SEED=1785852800490497919 ...
### Game Mode
By default, Minecraft servers are configured to run in Survival mode. You can
change the mode using `MODE` where you can either provide the [standard
numerical values](http://minecraft.gamepedia.com/Game_mode#Game_modes) or the
shortcut values:
* creative
* survival
For example:
docker run -d -e MODE=creative ...
### Message of the Day
The message of the day, shown below each server entry in the UI, can be changed with the `MOTD` environment variable, such as
docker run -d -e 'MOTD=My Server' ...
If you leave it off, the last used or default message will be used. _The example shows how to specify a server
message of the day that contains spaces by putting quotes around the whole thing._
### World Save Name
You can either switch between world saves or run multiple containers with different saves by using the `LEVEL` option,
where the default is "world":
docker run -d -e LEVEL=bonus ...
**NOTE:** if running multiple containers be sure to either specify a different `-v` host directory for each
`LEVEL` in use or don't use `-v` and the container's filesystem will keep things encapsulated.
## JVM Configuration
### Memory Limit
The Java memory limit can be adjusted using the `JVM_OPTS` environment variable, where the default is
the setting shown in the example (max and min at 1024 MB):