CASMHMS-6282: Avoid PEP 668 build issue with new python by using venv.

Also restructured Dockerfiles for easier reading

Dockerfile

@@ -51,23 +51,39 @@ FROM artifactory.algol60.net/csm-docker/stable/docker.io/library/alpine:3.19 AS
 
 COPY cmd/fw-loader/Pipfile /
 
+#### System Setup
+
 RUN set -x \
     && apk -U upgrade \
     && apk add --no-cache \
         bash \
         curl \
         python3 \
         py3-pip \
-        rpm \
-    && mkdir -p /.local \
+        rpm
+
+#### Environment Preparation
+
+RUN mkdir -p /.local \
     && mkdir -p /.cache \
     && ln -s /.local /root/.local \
     && ln -s /.cache /root/.cache \
-    && export LANG="en_US.UTF-8" \
-    && pip3 install --upgrade pip \
-    && pip3 install pipenv \
-    && pipenv install --deploy --ignore-pipfile \
-    && mkdir -p /fw && chown 65534:65534 /fw
+    && export LANG="en_US.UTF-8"
+
+#### Python Virtual Environment and Dependencies
+
+RUN python3 -m venv /venv \
+    && . /venv/bin/activate \
+    && pip install --upgrade pip \
+    && pip install pipenv
+
+#### Application Dependencies
+
+RUN pipenv install --deploy --ignore-pipfile
+
+#### Final Configuration
+
+RUN mkdir -p /fw && chown 65534:65534 /fw
 
 ### Final Stage ###
 

Dockerfile.functionaltesting.Dockerfile

@@ -26,16 +26,22 @@
 
 FROM artifactory.algol60.net/csm-docker/stable/docker.io/library/alpine:3.19 AS build-base
 
+#### System Setup
+
 RUN set -ex \
     && apk -U upgrade \
     && apk add --no-cache \
         bash \ 
         curl \ 
         python3 \
-        py3-pip \
-    && pip3 install --upgrade pip \
-    && pip3 install \
-        pipenv \
+        py3-pip
+
+#### Python Virtual Environment and Dependencies
+
+RUN python3 -m venv /venv \
+    && . /venv/bin/activate \
+    && pip install --upgrade pip \
+    && pip install pipenv \
         requests \
         pytest
 

Dockerfile.integration.Dockerfile

@@ -51,23 +51,39 @@ FROM artifactory.algol60.net/csm-docker/stable/docker.io/library/alpine:3.19 AS
 
 COPY cmd/fw-loader/Pipfile /
 
+#### System Setup
+
 RUN set -x \
     && apk -U upgrade \
     && apk add --no-cache \
         bash \
         curl \
         python3 \
         py3-pip \
-        rpm \
-    && mkdir -p /.local \
+        rpm
+
+#### Environment Preparation
+
+RUN mkdir -p /.local \
     && mkdir -p /.cache \
     && ln -s /.local /root/.local \
     && ln -s /.cache /root/.cache \
-    && export LANG="en_US.UTF-8" \
-    && pip3 install --upgrade pip \
-    && pip3 install pipenv \
-    && pipenv install --deploy --ignore-pipfile \
-    && mkdir -p /fw && chown 65534:65534 /fw
+    && export LANG="en_US.UTF-8"
+
+#### Python Virtual Environment and Dependencies
+
+RUN python3 -m venv /venv \
+    && . /venv/bin/activate \
+    && pip install --upgrade pip \
+    && pip install pipenv
+
+#### Application Dependencies
+
+RUN pipenv install --deploy --ignore-pipfile
+
+#### Final Configuration
+
+RUN mkdir -p /fw && chown 65534:65534 /fw
 
 ### Final Stage ###
 

Dockerfile.integration.tests.Dockerfile

@@ -33,15 +33,23 @@ ENV VERIFY_SSL False
 COPY test/integration/py/src src
 COPY test/integration/py/requirements.txt .
 
+#### System Setup
+
 RUN set -x \
     && apk -U upgrade \
     && apk add --no-cache \
         bash \
         curl \
         python3 \
-        py3-pip \
-    && pip3 install --upgrade pip \
-    && pip3 install \
+        py3-pip
+
+#### Python Virtual Environment and Dependencies
+
+RUN python3 -m venv /venv \
+    && . /venv/bin/activate \
+    && pip install --upgrade pip \
+    && pip install pipenv \
+    && pip install \
         requests \
         pytest