docs: add install docs

README.md

@@ -122,7 +122,9 @@ ask questions, get help, or suggest ideas.
 
 ## Docs
 
-- [Getting Started](./docs/getting-started.md)
+- Tutorials
+  - [Getting Started](./docs/getting-started.md)
+  - [Install](./docs/tutorials/install.md)
 - Architecture
   - [Overview](./docs/architecture/overview.md)
 - Manage

docs/tutorials/install.md

@@ -0,0 +1,48 @@
+# Install
+
+Piko consists of a single `piko` binary for both the server and agent, using
+`piko server` and `piko agent` respectively.
+
+## Download the binary
+
+Visit the [releases](https://github.com/andydunstall/piko/releases) page (under
+'Assets') to download the Piko binary for your architecture and host.
+
+For convenience you can rename the downloaded binary to `piko` and place it
+into your `PATH`, such as `/usr/bin/piko` or `/usr/local/bin/piko`.
+
+Run `piko -h` to verify the installation was successful.
+
+## Build from source
+
+Building Piko from source requires [Go](https://golang.org/doc/install) 1.22 or
+higher.
+
+Start by cloning the Piko repository from GitHub:
+```
+git clone https://github.com/andydunstall/piko.git
+cd piko
+```
+
+Then build the `piko` binary with `make piko`, which outputs the binary to
+`bin/piko`.
+
+You can also build the Docker image with `make image`.
+
+Run `piko -h` to verify the installation was successful.
+
+## Docker
+
+Visit the [packages](https://github.com/andydunstall/piko/pkgs/container/piko)
+page to see the available Docker images. Each image is tagged with `latest` and
+the Piko version:
+```
+# Latest version.
+docker pull ghcr.io/andydunstall/piko:latest
+
+# v0.4.0
+docker pull ghcr.io/andydunstall/piko:v0.4.0
+```
+
+Run `docker run ghcr.io/andydunstall/piko:latest` to verify the installation
+was successful.