Set POETRY_VERSION as build argument in Dockerfile

Dockerfile

@@ -18,6 +18,8 @@ RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 100 \
 
 FROM base AS python_builder
 
+ARG POETRY_VERSION=1.8.2
+
 # hadolint ignore=DL3008
 RUN apt-get update -qq \
    && apt-get install -y --no-install-recommends \
@@ -26,7 +28,7 @@ RUN apt-get update -qq \
 
 # install poetry
 # keep this in sync with the version in pyproject.toml and Dockerfile
-ENV POETRY_VERSION=1.8.2
+ENV POETRY_VERSION=$POETRY_VERSION
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 RUN curl -sSL https://install.python-poetry.org | python
 ENV PATH="/root/.local/bin:/opt/venv/bin:${PATH}"

Makefile

@@ -41,9 +41,11 @@ lint-docstrings: ## check docstrings
 IMAGE_NAME ?= rasa/rasa-sdk
 IMAGE_TAG ?= latest
 PLATFORM ?= linux/arm64
+POETRY_VERSION ?= 1.8.2
 
 build-docker:  ## build docker image for one platform
 	docker build . \
+			--build-arg POETRY_VERSION=$(POETRY_VERSION) \
             --platform=$(PLATFORM) \
             -f Dockerfile \
             -t $(IMAGE_NAME):$(IMAGE_TAG)
@@ -53,7 +55,8 @@ build-docker:  ## build docker image for one platform
 build-and-push-multi-platform-docker: PLATFORM = linux/amd64,linux/arm64
 build-and-push-multi-platform-docker:  ## build and push multi-platform docker image
 	docker buildx build . \
-            --platform=$(PLATFORM) \
+            --build-arg POETRY_VERSION=$(POETRY_VERSION) \
+			--platform=$(PLATFORM) \
 			-f Dockerfile \
 			-t $(IMAGE_NAME):$(IMAGE_TAG) \
 			--push