Source Twilio: Increase test coverage, fix parse_response bug, update…

… expected records, migrate base image (#32718)

Co-authored-by: pnilan <pnilan@users.noreply.github.com>

airbyte-integrations/connectors/source-twilio/README.md

@@ -47,19 +47,70 @@ python main.py read --config secrets/config.json --catalog integration_tests/con
 ### Locally running the connector docker image
 
 
-#### Build
-**Via [`airbyte-ci`](https://github.com/airbytehq/airbyte/blob/master/airbyte-ci/connectors/pipelines/README.md) (recommended):**
+
+
+#### Use `airbyte-ci` to build your connector
+The Airbyte way of building this connector is to use our `airbyte-ci` tool.
+You can follow install instructions [here](https://github.com/airbytehq/airbyte/blob/master/airbyte-ci/connectors/pipelines/README.md#L1).
+Then running the following command will build your connector:
+
 ```bash
-airbyte-ci connectors --name=source-twilio build
+airbyte-ci connectors --name source-twilio build
+```
+Once the command is done, you will find your connector image in your local docker registry: `airbyte/source-twilio:dev`.
+
+##### Customizing our build process
+When contributing on our connector you might need to customize the build process to add a system dependency or set an env var.
+You can customize our build process by adding a `build_customization.py` module to your connector.
+This module should contain a `pre_connector_install` and `post_connector_install` async function that will mutate the base image and the connector container respectively.
+It will be imported at runtime by our build process and the functions will be called if they exist.
+
+Here is an example of a `build_customization.py` module:
+```python
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    # Feel free to check the dagger documentation for more information on the Container object and its methods.
+    # https://dagger-io.readthedocs.io/en/sdk-python-v0.6.4/
+    from dagger import Container
+
+
+async def pre_connector_install(base_image_container: Container) -> Container:
+    return await base_image_container.with_env_variable("MY_PRE_BUILD_ENV_VAR", "my_pre_build_env_var_value")
+
+async def post_connector_install(connector_container: Container) -> Container:
+    return await connector_container.with_env_variable("MY_POST_BUILD_ENV_VAR", "my_post_build_env_var_value")
 ```
 
-An image will be built with the tag `airbyte/source-twilio:dev`.
+#### Build your own connector image
+This connector is built using our dynamic built process in `airbyte-ci`.
+The base image used to build it is defined within the metadata.yaml file under the `connectorBuildOptions`.
+The build logic is defined using [Dagger](https://dagger.io/) [here](https://github.com/airbytehq/airbyte/blob/master/airbyte-ci/connectors/pipelines/pipelines/builds/python_connectors.py).
+It does not rely on a Dockerfile.
+
+If you would like to patch our connector and build your own a simple approach would be to:
+
+1. Create your own Dockerfile based on the latest version of the connector image.
+```Dockerfile
+FROM airbyte/source-twilio:latest
+
+COPY . ./airbyte/integration_code
+RUN pip install ./airbyte/integration_code
 
-**Via `docker build`:**
+# The entrypoint and default env vars are already set in the base image
+# ENV AIRBYTE_ENTRYPOINT "python /airbyte/integration_code/main.py"
+# ENTRYPOINT ["python", "/airbyte/integration_code/main.py"]
+```
+Please use this as an example. This is not optimized.
+
+2. Build your image:
 ```bash
 docker build -t airbyte/source-twilio:dev .
+# Running the spec command against your patched connector
+docker run airbyte/source-twilio:dev spec
 ```
-
 #### Run
 Then run any of the connector commands as follows:
 ```
@@ -94,4 +145,3 @@ You've checked out the repo, implemented a million dollar feature, and you're re
 5. Create a Pull Request: use [our PR naming conventions](https://docs.airbyte.com/contributing-to-airbyte/resources/pull-requests-handbook/#pull-request-title-convention).
 6. Pat yourself on the back for being an awesome contributor.
 7. Someone from Airbyte will take a look at your PR and iterate with you to merge it into master.
-