Adding a sample for Poetry

examples/python-poetry-image/Dockerfile

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+FROM python:3.7
+
+ARG NB_USER="sagemaker-user"
+ARG NB_UID="1000"
+ARG NB_GID="100"
+
+######################
+# OVERVIEW
+# 1. Creates the `sagemaker-user` user with UID/GID 1000/100.
+# 2. Ensures this user can `sudo` by default. 
+# 3. Installs and configures Poetry, then installs the environment defined in pyproject.toml
+# 4. Configures the kernel (ipykernel should be installed on the parent image or defined in pyproject.toml)
+# 5. Make the default shell `bash`. This enhances the experience inside a Jupyter terminal as otherwise Jupyter defaults to `sh`
+######################
+
+# Setup the "sagemaker-user" user with root privileges.
+RUN \
+    apt-get update && \
+    apt-get install -y sudo && \
+    useradd -m -s /bin/bash -N -u $NB_UID $NB_USER && \
+    chmod g+w /etc/passwd && \
+    echo "${NB_USER}    ALL=(ALL)    NOPASSWD:    ALL" >> /etc/sudoers && \
+    # Prevent apt-get cache from being persisted to this layer.
+    rm -rf /var/lib/apt/lists/*
+
+# Install Poetry
+RUN pip install poetry
+# Disable virtual environments (see notes in README.md)
+RUN poetry config virtualenvs.create false --local
+# Copy the environment definition file and install the environment
+COPY pyproject.toml /
+RUN poetry install
+
+# Configure the kernel
+RUN python -m ipykernel install --sys-prefix
+
+# Make the default shell bash (vs "sh") for a better Jupyter terminal UX
+ENV SHELL=/bin/bash
+
+USER $NB_UID

examples/python-poetry-image/README.md

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+## Python Poetry Image
+
+### Overview
+
+This example creates a custom image in Amazon SageMaker Studio using [Poetry](https://python-poetry.org/) to manage the Python dependencies.
+
+### Building the image
+
+Build the Docker image and push to Amazon ECR.
+```
+# Modify these as required. The Docker registry endpoint can be tuned based on your current region from https://docs.aws.amazon.com/general/latest/gr/ecr.html#ecr-docker-endpoints
+REGION=<aws-region>
+ACCOUNT_ID=<account-id>
+
+# Build the image
+IMAGE_NAME=custom-poetry-kernel
+aws --region ${REGION} ecr get-login-password | docker login --username AWS --password-stdin ${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com/smstudio-custom
+docker build . -t ${IMAGE_NAME} -t ${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com/smstudio-custom:${IMAGE_NAME}
+```
+
+```
+docker push ${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com/smstudio-custom:${IMAGE_NAME}
+```
+
+### Using it with SageMaker Studio
+
+Create a SageMaker Image with the image in ECR. 
+
+```
+# Role in your account to be used for the SageMaker Image
+ROLE_ARN=<role-arn>
+
+aws --region ${REGION} sagemaker create-image \
+    --image-name ${IMAGE_NAME} \
+    --role-arn ${ROLE_ARN}
+
+aws --region ${REGION} sagemaker create-image-version \
+    --image-name ${IMAGE_NAME} \
+    --base-image "${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com/smstudio-custom:${IMAGE_NAME}"
+
+# Verify the image-version is created successfully. Do NOT proceed if image-version is in CREATE_FAILED state or in any other state apart from CREATED.
+aws --region ${REGION} sagemaker describe-image-version --image-name ${IMAGE_NAME}
+```
+
+Create an AppImageConfig for this image.
+
+```
+aws --region ${REGION} sagemaker create-app-image-config --cli-input-json file://app-image-config-input.json
+
+```
+
+Create a Domain, providing the SageMaker Image and AppImageConfig in the Domain creation. Replace the placeholders for VPC ID, Subnet IDs, and Execution Role in `create-domain-input.json`.
+
+```
+aws --region ${REGION} sagemaker create-domain --cli-input-json file://create-domain-input.json
+```
+
+If you have an existing Domain, you can use the `update-domain` command.
+
+```
+aws --region ${REGION} sagemaker update-domain --cli-input-json file://update-domain-input.json
+```
+
+### Notes
+
+* Since SageMaker Studio overrides `ENTRYPOINT` and `CMD` instructions (see [documentation](https://docs.aws.amazon.com/sagemaker/latest/dg/studio-byoi-specs.html)), this sample disables the Poetry virtual environments as recommended in their [FAQ](https://python-poetry.org/docs/faq/#i-dont-want-poetry-to-manage-my-virtual-environments-can-i-disable-it). 
+* Note that `ipykernel` must be installed on custom images for SageMaker Studio. If this package is not installed by default on the parent image, then it should be included in the `pyproject.toml` file. 

examples/python-poetry-image/app-image-config-input.json

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+		{
+            "AppImageConfigName": "custom-poetry-kernel-image-config",
+            "KernelGatewayImageConfig": {
+                "KernelSpecs": [
+                    {
+                        "Name": "python3",
+                        "DisplayName": "Python 3 (poetry)"
+                    }
+                ],
+                "FileSystemConfig": {
+                    "MountPath": "/home/sagemaker-user",
+                    "DefaultUid": 1000,
+                    "DefaultGid": 100
+                }
+            }
+        }

examples/python-poetry-image/create-domain-input.json

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+{
+    "DomainName": "domain-with-poetry-kernel-image",
+    "VpcId": "<vpc-id>",
+    "SubnetIds": [
+        "<subnet-ids>"
+    ],
+    "DefaultUserSettings": {
+        "ExecutionRole": "<execution-role>",
+        "KernelGatewayAppSettings": {
+            "CustomImages": [
+                {
+                    "ImageName": "custom-poetry-kernel",
+                    "AppImageConfigName": "custom-poetry-kernel-image-config"
+                }
+            ]
+        }
+    },
+    "AuthMode": "IAM"
+}

examples/python-poetry-image/pyproject.toml

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+[tool.poetry]
+name = "custom_poetry_image"
+version = "0.1.0"
+description = "An example of a custom Poetry image for SageMaker Studio."
+authors = ["Your Name <[email protected]>"]
+
+[tool.poetry.dependencies]
+python = ">=3.7.1,<3.10"
+boto3 = "^1.17.51"
+ipykernel = "^5.5.3"
+numpy = "^1.20.2"
+pandas = "^1.2.4"
+scikit-learn = "^0.24.1"
+scipy = "^1.6.2"
+
+[tool.poetry.dev-dependencies]
+
+[build-system]
+requires = ["poetry-core>=1.1.6"]
+build-backend = "poetry.core.masonry.api"

examples/python-poetry-image/update-domain-input.json

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+{
+    "DomainId": "<domain-id>",
+    "DefaultUserSettings": {
+        "KernelGatewayAppSettings": {
+            "CustomImages": [
+                {
+                    "ImageName": "custom-poetry-kernel",
+                    "AppImageConfigName": "custom-poetry-kernel-image-config"
+                }
+            ]
+        }
+    }
+}