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134 lines
8.1 KiB
Markdown
134 lines
8.1 KiB
Markdown
<h1 align="center">OpenSimulator</h1>
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<p align="center">
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<a href="https://github.com/soup-bowl/opensimulator-docker/actions/workflows/build-main.yml"><img src="https://img.shields.io/github/actions/workflow/status/soup-bowl/opensimulator-docker/build-main.yml?style=plastic" alt="GitHub Workflow Status" /></a>
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<a href="https://hub.docker.com/r/soupbowl/opensimulator"><img src="https://img.shields.io/docker/image-size/soupbowl/opensimulator/latest?logo=docker&logoColor=white&style=plastic" alt="Docker Image Size (tag)" /></a>
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<a href="https://hub.docker.com/r/soupbowl/opensimulator"><img src="https://img.shields.io/docker/pulls/soupbowl/opensimulator?logo=docker&logoColor=white&style=plastic" alt="Docker Pulls" /></a>
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</p>
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<p align="center">
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<img src="https://user-images.githubusercontent.com/11209477/215610935-abf2a083-5707-45e4-a8e4-468a43283c8a.png" alt="Screenshot from inside the Firestorm Metaverse client, showing a woman with a floating nametag 'foo bar' staring out into the ocean, standing upon a small mound island" />
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</p>
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From the [OpenSimulator][os] site:
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> OpenSimulator is an open source multi-platform, multi-user 3D application server. It can be used to create a virtual environment (or world) which can be accessed through a variety of clients, on multiple protocols.
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This **unofficial** Docker configuration aims to assist in setting the server up for testing and general purpose use.
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**This is still experimental - thar be bugs!**
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# Usage
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```bash
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docker run -d --name opensim -p 9000:9000 -p 9000:9000/udp soupbowl/opensimulator:latest
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```
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You can change settings with the following optional environmental overrides:
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* `-e GRID_NAME=...` to define the name of [your grid][grid].
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* `-e GRID_WELCOME=...` to show a custom message on the login screen.
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* `-e REGION_NAME=...` to define the [Region][region] name.
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* `-e ESTATE_NAME=...` to define the [Estate][estate] name.
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* `-e ESTATE_OWNER_NAME=...` to set the estate owner name (and creates a login) - format of 'Firstname Lastname'.
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* `-e ESTATE_OWNER_PASSWORD=...` to define a login password.
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* `-e ESTATE_OWNER_UUID=...` for a custom UUID, if desired.
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* `-e ESTATE_OWNER_EMAIL=...` to define the estate email address.
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* `-e DATABASE_ENGINE=...` to change the database engine (sqlite and mysql support so far) - defaults to sqlite.
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* `-e MYSQL_SERVER=...`, `-e MYSQL_DATABASE=...`, `-e MYSQL_USER=...`, `-e MYSQL_PASSWORD=...` if `DATABASE_ENGINE` is `mysql`.
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* `-e PHYSICS_ENGINE=...` to change the physics engine. Default is `BulletSim` with others being `OpenDynamicsEngine`, `ubODE` and `basicphysics`.
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Once the server is running, you should be able to connect to it on `localhost:9000`. In **Firestorm Viewer**, you can go to **Preferences**, then **Opensim**, then under **add new grid** put `localhost:9000` and you can then login.
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If you don't define otherwise in the environments or a custom configuration, the login username is **Foo bar** and the password is **password**.
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## Custom Configurations
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The environment list is not inclusive to the incredible range of options that OpenSimulator can be configured, and just covers a subset of the most popular settings. If you specify your own custom configuration file, it will be used instead of the image-generated configuration (you can define it as readonly (`:ro`) for assurance).
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The working directory is `/opt/opensim/bin/`, so for example overriding `OpenSim.ini` would be `"/path/to/local/OpenSim.ini:/opt/opensim/bin/OpenSim.ini:ro"` ([example](https://github.com/soup-bowl/opensim-sandbox/blob/1d4324e1bdd4ba715edc1c3f78e78842e7374f1b/standalone-wordpress/docker-compose.yml#L34)).
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## SQLite Persistence
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Outside of configurations, pretty much everything OpenSimulator does is stored in your chosen database provider. If you choose to leave the default on (sqlite), then your installation will not persist if you remove your container.
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To aid the use of SQLite mode with persistent data, the default configuration has been modified to create the database directories into a dedicated directory (`/opt/opensim/bin/sqlite-database`). The following command will allow you to run a persistent SQLite setup.
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(Note that if you use a custom `SQLiteStandalone.ini` file, this will not happen).
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```
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docker run -d --name opensim -p 9000:9000 -p 9000:9000/udp -v /path/on/your/system:/opt/opensim/bin/sqlite-database soupbowl/opensimulator:latest
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```
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# Limitations
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## Running Server Admin Commands
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At current, there doesn't appear to be an implemented and/or documented approach to managing the server from _outside_ the active TTY, and running `docker attach opensim` seems to produce a blank prompt. You can `exec` into the container or edit the bound configuration script and restart the server to make changes, but in some server instances you might need to intercept the prompt.
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Until a better solution is made, you can get crafty with `screen` to get access to the current prompt in terminal, with the caveat that logging will no longer work.
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You can achieve this with a **Dockerfile** like so:
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```dockerfile
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FROM soupbowl/opensimulator:latest
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CMD [ "screen", "-S", "OpenSim", "-D", "-m", "mono", "./OpenSim.exe" ]
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```
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With a container running the above Dockerfile, you can access a controllable OpenSimulator administration prompt by running:
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```
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docker exec -it <container name> screen -r -d OpenSim
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```
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You can leave the screen session by pressing `ctrl + a` then `d`.
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## Physics in ARM
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Each image has an ARM64 architecture build. Your mileage may vary with these as the server environment was not designed for use outside x86_64.
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Currently, **Physics environments do not appear to be natively supported**, and running a server with BulletSim or OpenDynamicsEngine (ODE) will cause a fatal exception. You unfortunately currently have to run the server without physics. This can be achieved by setting the environment `-e PHYSICS_ENGINE=basicphysics`, or with the following OpenSim configuration adjustment:
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```ini
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[Startup]
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physics = basicphysics
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```
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Alternatively, a suitable drop-in library in `lib64/libBulletSim-aarch64.so` for BulletSim Physics could work, but may be unsupported.
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**I'm keen to support ARM architecture to the bounds of OpenSimulator. If you have any experience on this, please reach out to me.**
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# Examples
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See [this repository](https://github.com/soup-bowl/opensim-sandbox) for some example usages of this image.
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# Variants
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Variant names are listed in Dockerhub format. They are also available from the GitHub Registry, replacing `soupbowl/opensimulator` with `ghcr.io/soup-bowl/opensimulator-docker`.
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## `soupbowl/opensimulator:latest`
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The latest OpenSimulator image build using `mono:latest` as the build reference.
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## `soupbowl/opensimulator:alpine-beta`
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A bleeding edge variant using **Alpine** as the build image with **Mono** dependency added. Mono is currently not in the stable packages build, so this image is considered unstable. Progress can be tracked on the [#1 ticket](https://github.com/soup-bowl/opensimulator-docker/issues/1).
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## `soupbowl/opensimulator:source`
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Gets the latest available code from the OpenSimulator repository, and constructs a bleeding edge container. Configuration is not different, but this is **compiled from source** and should be **treated as highly unstable**. These are built **4 times daily**, providing a change has occurred.
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These are compiled to use the [official .NET root image](https://mcr.microsoft.com/en-us/product/dotnet/runtime/about), instead of the [Mono Framework](https://hub.docker.com/_/mono/).
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**Note**: This was originally building from the `dotnet6` branch of the OpenSimulator repository. This image is now truly built from source, but if you want to use the original-type image, it is now built to the container tag `dotnet6`.
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# Source Code
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The source code of the Docker image is [found on the GitHub repository][src]. You can find the [OpenSimulator server software source code on their website](http://opensimulator.org/wiki/Developer_Documentation#Source_Code_Repository_Access).
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[src]: https://github.com/soup-bowl/opensimulator-docker
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[os]: http://opensimulator.org/wiki/Main_Page
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[grid]: https://wiki.secondlife.com/wiki/Land#Grid
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[estate]: https://wiki.secondlife.com/wiki/Land#Estate
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[region]: https://wiki.secondlife.com/wiki/Land#Region
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