fix: Docker file failure issue

docker/Admin.Dockerfile

@@ -3,7 +3,7 @@ RUN apt-get update && apt-get install python3-tk tk-dev -y
 COPY pyproject.toml /usr/local/src/myscripts/pyproject.toml
 COPY poetry.lock /usr/local/src/myscripts/poetry.lock
 WORKDIR /usr/local/src/myscripts/
-RUN pip install --upgrade pip && pip install poetry && poetry export -o requirements.txt && pip install -r requirements.txt
+RUN pip install --upgrade pip && pip install poetry && poetry self add poetry-plugin-export && poetry export -o requirements.txt && pip install -r requirements.txt
 COPY ./code/backend /usr/local/src/myscripts/admin
 COPY ./code/backend/batch/utilities /usr/local/src/myscripts/utilities
 WORKDIR /usr/local/src/myscripts/admin

docker/Backend.Dockerfile

@@ -6,7 +6,7 @@ ENV AzureWebJobsScriptRoot=/home/site/wwwroot \
 
 COPY pyproject.toml /
 COPY poetry.lock /
-RUN pip install --upgrade pip && pip install poetry && poetry export -o requirements.txt && pip install -r requirements.txt
+RUN pip install --upgrade pip && pip install poetry && poetry self add poetry-plugin-export && poetry export -o requirements.txt && pip install -r requirements.txt
 
 COPY ./code/backend/batch/utilities /home/site/wwwroot/utilities
-COPY ./code/backend/batch /home/site/wwwroot
+COPY ./code/backend/batch /home/site/wwwroot

docker/Frontend.Dockerfile

@@ -14,7 +14,7 @@ RUN apt-get update && apt-get install python3-tk tk-dev -y
 COPY pyproject.toml /usr/src/app/pyproject.toml
 COPY poetry.lock /usr/src/app/poetry.lock
 WORKDIR /usr/src/app
-RUN pip install --upgrade pip && pip install poetry uwsgi && poetry export -o requirements.txt && pip install -r requirements.txt
+RUN pip install --upgrade pip && pip install poetry uwsgi && poetry self add poetry-plugin-export && poetry export -o requirements.txt && pip install -r requirements.txt
 
 COPY ./code/*.py /usr/src/app/
 COPY ./code/backend /usr/src/app/backend