Add GitHub pages

docs/installation/docker.md

@@ -0,0 +1,45 @@
+---
+title: Docker image
+parent: Installation
+nav_order: 22
+---
+
+# GitHub Container Registry
+
+Docker images are published to the GHCR at every release.
+The client and server are packaged in different images.
+
+* [ghcr.io/endpositive/slipstream-client](https://ghcr.io/endpositive/slipstream-client)
+* [ghcr.io/endpositive/slipstream-server](https://ghcr.io/endpositive/slipstream-server)
+
+### Tags
+
+* latest
+* vX.X.X
+
+# Usage
+
+The client requires port 5201 to be forwarded to the host.
+The server requires port 53 to be forwarded.
+
+```shell
+$ docker run \
+  --rm \
+  -p 53:53 \
+  ghcr.io/endpositive/slipstream-server:v0.0.1 \
+  --target-address=x.x.x.x:yy \
+  --domain=test.com
+```
+
+```shell
+$ docker run \
+  --rm \
+  -p 5201:5201 \
+  ghcr.io/endpositive/slipstream-server:v0.0.1 \
+  --domain=test.com \
+  --resolver=1.1.1.1:53
+```
+
+Any TCP connections on the client's port `5201` will now be forwarded to `x.x.x.x:yy`.
+You could also run a slipstream on a different port than 53, but then a public resolver won't be able to reach the server.
+This may be useful in scenarios where you setup a direct connection between the client and server rather than through public DNS infrastructure.