# First Steps

The simplest FastAPI file could look like this:

{* ../../docs_src/first_steps/tutorial001.py *}

Copy that to a file `main.py`.

Run the live server:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

        every { buildType.steps } returns steps
        every { buildType.stage } returns buildModel.stages[2]
        every {
            buildType.steps(capture(stepsCapturer))
        } answers {
            stepsCapturer.captured(steps)
            mockk()
        }
    }

    @Test
    fun `can apply defaults to configurations`() {
        applyDefaults(buildModel, buildType, "myTask")

        assertEquals(

            CACHEBUSTER=${{ steps.tf-version.outputs.DATE }}
          tags: |
            tensorflow/build:latest-${{ matrix.python-version }}
            tensorflow/build:${{ steps.tf-version.outputs.TF_VERSION }}-${{ matrix.python-version }}
            gcr.io/tensorflow-sigs/build:latest-${{ matrix.python-version }}
            gcr.io/tensorflow-sigs/build:${{ steps.tf-version.outputs.TF_VERSION }}-${{ matrix.python-version }}

    protected String prepareConfigFile() {
        return "app.xml";
    }

    @Override
    protected boolean isUseOneTimeContainer() {
        return true;
    }

    @Override
    public void setUp() throws Exception {
        // create runner instance
        runner = new OpenSearchRunner();
        // create ES nodes
        final String clusterName = UUID.randomUUID().toString();

Sebastián Ramírez <******@****.***> 1728247014 +0200

Sebastián Ramírez <******@****.***> 1728247014 +0200

Sebastián Ramírez <******@****.***> 1728247014 +0200

Sebastián Ramírez <******@****.***> 1728247014 +0200

Sebastian Kozłowski <******@****.***> 1730047890 +0100

permissions:
  contents: read # to fetch code (actions/checkout)

jobs:
  vulncheck:
    name: Analysis
    runs-on: ubuntu-latest
    steps:
      - name: Check out code into the Go module directory
        uses: actions/checkout@v4
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: 1.22.7
      - name: Get official govulncheck