ST-1260: add poetry to path

images/ska-tango-images-pytango-builder-alpine/Dockerfile

@@ -68,6 +68,7 @@ RUN set -eux; \
     
 # Install poetry binary 
 RUN curl -sSL https://install.python-poetry.org | POETRY_HOME=/usr/local/bin/poetry python3 - --yes
+ENV PATH="/usr/local/bin/poetry:${PATH}"
 
 # Install numpy manually before PyTango and other requirements to ensure we
 # build PyTango with numpy support.

images/ska-tango-images-pytango-builder-no-deps-alpine/Dockerfile

@@ -81,6 +81,7 @@ RUN python3.9 -m pip install --prefix=/usr/local wheel numpy==1.21.0 \
 
 # Install poetry binary 
 RUN curl -sSL https://install.python-poetry.org | POETRY_HOME=/usr/local/bin/poetry python3 - --yes
+ENV PATH="/usr/local/bin/poetry:${PATH}"
 
 # do ldconfig stuff
 RUN mkdir -p /etc/ld.so.conf.d \