feat: runner infrastructure is built

terraform/main.tf

@@ -0,0 +1,29 @@
+data "aws_subnet" "public" {
+  tags = { SubnetOf = "Main", SubnetType = "Public" }
+}
+
+# An instance profile for access via AWS SSM.
+data "aws_iam_instance_profile" "ssm" {
+  name = "SSMInstanceProfile"
+}
+
+# The Gitea Runner instance.
+resource "aws_instance" "this" {
+  ami           = "ami-0adec96dc0cdc7bca"
+  instance_type = "t4g.nano"
+  subnet_id     = data.aws_subnet.public.id
+
+  user_data                   = file("install.sh")
+  user_data_replace_on_change = true
+
+  iam_instance_profile = data.aws_iam_instance_profile.ssm.name
+
+  root_block_device {
+    volume_type = "gp3"
+    volume_size = 8
+  }
+
+  tags = {
+    Name = "Codebase: Runner"
+  }
+}