Created Setting up a new x86_64 Linux CI server (markdown)

Setting-up-a-new-x86_64-Linux-CI-server.md

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+# Setting up a new x86_64 Linux CI Server
+
+## Initial Setup
+
+Order the server from Hetzner.
+
+Choose a subdomain and add an A record in AWS Route 53 to point to it.
+
+```
+ssh root@zanic.ziglang.org
+installimage
+```
+
+Choose latest stable Debian which is currently "bookworm".
+
+In the settings editor, change the hostname (e.g. `zanic.ziglang.org`).
+
+Reboot.
+
+```
+ssh root@zanic.ziglang.org
+
+apt update
+apt upgrade
+apt install cmake ninja-build tidy git
+
+adduser ci
+passwd -d ci
+su ci
+cd
+
+mkdir deps
+cd deps
+wget https://ziglang.org/deps/qemu-linux-x86_64-6.1.0.1.tar.xz
+tar xf qemu-linux-x86_64-6.1.0.1.tar.xz
+wget https://github.com/bytecodealliance/wasmtime/releases/download/v2.0.2/wasmtime-v2.0.2-x86_64-linux.tar.xz
+tar xf wasmtime-v2.0.2-x86_64-linux.tar.xz
+wget https://ziglang.org/deps/zig+llvm+lld+clang-x86_64-linux-musl-0.11.0-dev.1869+df4cfc2ec.tar.xz
+tar xf zig+llvm+lld+clang-x86_64-linux-musl-0.11.0-dev.1869+df4cfc2ec.tar.xz
+rm *.tar.xz
+```
+
+Then add as many runners as the hardware can handle.
+
+## Add a GitHub Actions Runner
+
+[New self-hosted runner](https://github.com/ziglang/zig/settings/actions/runners/new)
+
+```
+ssh root@zanic.ziglang.org
+su ci
+cd
+# follow the snippet of code from the GitHub instructions
+```
+
+ * Name of runner: make up something unique
+ * Add label: `x86_64`
+
+Instead of their last `./run.sh` step, do this, as root:
+
+```
+./svc.sh install ci
+./svc.sh start ci
+```