# Factorio [](https://microbadger.com/images/factoriotools/factorio "Get your own image badge on microbadger.com") [](https://hub.docker.com/r/factoriotools/factorio/) [](https://hub.docker.com/r/factoriotools/factorio/)
[Factorio](https://www.factorio.com) is a game in which you build and maintain factories.
You will be mining resources, researching technologies, building infrastructure, automating production and fighting enemies. Use your imagination to design your factory, combine simple elements into ingenious structures, apply management skills to keep it working and finally protect it from the creatures who don't really like you.
The game is very stable and optimized for building massive factories. You can create your own maps, write mods in Lua or play with friends via Multiplayer.
NOTE: This is only the server. The game is available at [factorio.com](https://www.factorio.com) and [Steam](http://store.steampowered.com/app/427520/).
The `chown` command is needed because in 0.16+, we no longer run the game server as root for security reasons, but rather as a 'factorio' user with user id 845. The host must therefore allow these files to be written by that user.
To issue console commands to the server, start the server in interactive mode with `-it`. Open the console with `docker attach` and then type commands.
Before upgrading backup the save. It's easy to make a save in the client.
Ensure `-v` was used to run the server so the save is outside of the Docker container. The `docker rm` command completely destroys the container, which includes the save if it isn't stored in an data volume.
A new map named `_autosave1.zip` is generated the first time the server is started. The `map-gen-settings.json` and `map-settings.json` files in `/opt/factorio/config` are used for the map settings. On subsequent runs the newest save is used.
To load an old save stop the server and run the command `touch oldsave.zip`. This resets the date. Then restart the server. Another option is to delete all saves except one.
If you want to launch a scenario from a clean start (not from a saved map) you'll need to start the docker image from an alternate entrypoint. To do this, use the example entrypoint file stored in the /factorio/entrypoints directory in the volume, and launch the image with the following syntax. Note that this is the normal syntax with the addition of the --entrypoint setting AND the additional argument at the end, which is the name of the Scenario in the Scenarios folder.
If you would like to export your scenario to a saved map, you can use the example entrypoint similar to the Scenario usage above. Factorio will run once, converting the Scenario to a saved Map in your saves directory. A restart of the docker image using the standard options will then load that map, just as if the scenario were just started by the Scenarios example noted above.
Out-of-the box, factorio does not support environment variables inside the configuration files. A workaround is the usage of `envsubst` which generates the configuration files dynamically during startup from environment variables set in docker-compose:
First get a [docker-compose.yml](https://github.com/factoriotools/factorio-docker/blob/master/0.17/docker-compose.yml) file. To get it from this repository:
Ensure the `lan` setting in server-settings.json is `true`.
```
"visibility":
{
"public": false,
"lan": true
},
```
Start the container with the `--network=host` option so clients can automatically find LAN games. Refer to the Quick Start to create the `/opt/factorio` directory.
[Vagrant](https://www.vagrantup.com/) is a easy way to setup a virtual machine (VM) to run Docker. The [Factorio Vagrant box repository](https://github.com/dtandersen/factorio-lan-vagrant) contains a sample Vagrantfile.
For LAN games the VM needs an internal IP in order for clients to connect. One way to do this is with a public network. The VM uses DHCP to acquire an IP address. The VM must also forward port 34197.
If you're looking for a simple way to deploy this to the Amazon Web Services Cloud, check out the [Factorio Server Deployment (CloudFormation) repository](https://github.com/m-chandler/factorio-spot-pricing). This repository contains a CloudFormation template that will get you up and running in AWS in a matter of minutes. Optionally it uses Spot Pricing so the server is very cheap, and you can easily turn it off when not in use.
Check the logs. If there is the line `Own address is RIGHT IP:WRONG PORT`, then this could be caused by the Docker proxy. If the the IP and port is correct it's probably a port forwarding or firewall issue instead.
By default, Docker routes traffic through a proxy. The proxy changes the source UDP port, so the wrong port is detected. See the forum post *[Incorrect port detected for docker hosted server](https://forums.factorio.com/viewtopic.php?f=49&t=35255)* for details.
To fix the incorrect port, start the Docker service with the `--userland-proxy=false` switch. Docker will route traffic with iptables rules instead of a proxy. Add the switch to the `DOCKER_OPTS` environment variable or `ExecStart` in the Docker systemd service definition. The specifics vary by operating system.
Use the `PORT` environment variable to start the server on the a different port, .e.g. `docker run -e "PORT=34198"`. This changes the source port on the packets used for port detection. `-p 34198:34197` works fine for private servers, but the server browser detects the wrong port.
