Build arg for Poetry version and set to latest for testing on CI

Dockerfile

@@ -18,10 +18,12 @@ RUN mkdir /src
 RUN adduser --disabled-password --gecos "" mitodl
 RUN mkdir /var/media && chown -R mitodl:mitodl /var/media
 
+ARG POETRY_VERSION=1.5.1
+
 # Poetry env configuration
 ENV  \
   # poetry:
-  POETRY_VERSION=1.5.1 \
+  POETRY_VERSION=$POETRY_VERSION \
   POETRY_VIRTUALENVS_CREATE=false \
   POETRY_CACHE_DIR='/tmp/cache/poetry'
 

docker-compose-e2e-tests.yml

@@ -27,6 +27,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile
+      args:
+        POETRY_VERSION: 1.7.0
     environment:
       PORT: 8061
     env_file: .env.ci