// +optional
  repeated string hosts = 1;

  // secretName is the name of the secret used to terminate TLS traffic on
  // port 443. Field is left optional to allow TLS routing based on SNI
  // hostname alone. If the SNI host in a listener conflicts with the "Host"
  // header field used by an IngressRule, the SNI host is used for termination
  // and value of the "Host" header is used for routing.
  // +optional

# * Building all docker images (generally in CI). In this case we want to build everything at once, so they share work
# * Building a single docker image (generally during dev). In this case we just want to build the single binary alone
BUILD_ALL ?= true
define build-linux
.PHONY: $(TARGET_OUT_LINUX)/$(shell basename $(1))
ifeq ($(BUILD_ALL),true)
$(TARGET_OUT_LINUX)/$(shell basename $(1)): build-linux
	@:
else

    int hashThree = map.hash(keyThree);
    InternalEntry<Object, Object, ?> entryThree =
        segment.newEntryForTesting(keyThree, hashThree, entryTwo);
    segment.setValueForTesting(entryThree, valueThree);

    // alone
    assertNull(segment.removeFromChainForTesting(entryOne, entryOne));

    // head
    assertSame(entryOne, segment.removeFromChainForTesting(entryTwo, entryTwo));

    // middle

    int hashThree = map.hash(keyThree);
    InternalEntry<Object, Object, ?> entryThree =
        segment.newEntryForTesting(keyThree, hashThree, entryTwo);
    segment.setValueForTesting(entryThree, valueThree);

    // alone
    assertNull(segment.removeFromChainForTesting(entryOne, entryOne));

    // head
    assertSame(entryOne, segment.removeFromChainForTesting(entryTwo, entryTwo));

    // middle

```Dockerfile
CMD ["fastapi", "run", "app/main.py", "--proxy-headers", "--port", "80"]
```

#### Docker Cache

There's an important trick in this `Dockerfile`, we first copy the **file with the dependencies alone**, not the rest of the code. Let me tell you why is that.

```Dockerfile
COPY ./requirements.txt /code/requirements.txt
```

    ```

!!! note
    Keep in mind that in this case, FastAPI won't check the contents of the list.

    For example, `List[int]` would check (and document) that the contents of the list are integers. But `list` alone wouldn't.

## Declare more metadata

You can add more information about the parameter.

That information will be included in the generated OpenAPI and used by the documentation user interfaces and external tools.

  // +optional
  repeated string hosts = 1;

  // SecretName is the name of the secret used to terminate SSL traffic on 443.
  // Field is left optional to allow SSL routing based on SNI hostname alone.
  // If the SNI host in a listener conflicts with the "Host" header field used
  // by an IngressRule, the SNI host is used for termination and value of the
  // Host header is used for routing.
  // +optional