initial docs

docs/first-workload.md

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+First let’s install the CLI, which allow us to interact with a mini-loader server, but also run our workloads locally to validate that they are working
+
+```bash
+npm install -g @morten-olsen/mini-loader-cli
+```
+
+Next we need a script - let’s start simple with a script which will just output a single artifact called “hello”
+
+```javascript
+import { artifacts } from "@morten-olsen/mini-loader";
+
+artifacts.create('hello', 'world');
+```
+
+We save our script as `script.mjs`
+
+Note that we are referencing a package we don’t have. mini-loader support automatically downloading packages when it prepares the script. We could also have initialised a node project and installed the dependency (useful if you are using typescript and want typings)
+
+Next we want to execute our script locally to validate that it actually works as we intended
+
+```bash
+mini-loader local run script.mjs -ai
+```
+
+Note the `-ai` which tells the CLI to download any packages referenced when it bundles the script
+
+This should output that the script indeed created a new artifact named “hello”
+
+[Next: setting up the server](./setup-server.md)