Switch back to python2 to fix issues (#67)

It seems as though this app isn't quite python3 compatible yet. This does the
following:

- Switch to using an AlmaLinux 8 so we can use python2
- Install git which is needed for the app to run
- Update requirements.txt to match current production

We need to eventually get this app and it's dependencies upgraded but this at
least allows us to migrate it.

Signed-off-by: Lance Albertson <lance@osuosl.org>

Dockerfile

@@ -1,8 +1,9 @@
-FROM python:3.11-alpine
+FROM almalinux:8
 
+RUN dnf -y install python2-pip python2-devel git
 COPY requirements.txt /prerelease_website/requirements.txt
 WORKDIR /prerelease_website
-RUN pip  --no-cache-dir install -r requirements.txt
+RUN pip2 --no-cache-dir install -r requirements.txt
 COPY . /prerelease_website
 ENTRYPOINT ["/prerelease_website/entrypoint.sh"]
 EXPOSE 5000

requirements.txt

@@ -1,23 +1,21 @@
-blinker==1.8.2
-catkin-pkg==1.0.0
-click==8.1.7
-configparser==7.0.0
-distro==1.9.0
-docutils==0.21.2
-empy==4.1
-Flask==3.0.3
-gunicorn==22.0.0
-itsdangerous==2.2.0
-Jinja2==3.1.4
-MarkupSafe==2.1.5
-packaging==24.1
-pyparsing==3.1.2
-python-dateutil==2.9.0.post0
-PyYAML==6.0.1
+catkin-pkg==0.4.23
+click==7.1.2
+configparser==4.0.2
+distro==1.5.0
+docutils==0.16
+empy==3.3.4
+Flask==1.1.2
+gunicorn==19.10.0
+itsdangerous==1.1.0
+Jinja2==2.11.3
+MarkupSafe==1.1.1
+pyparsing==2.4.7
+python-dateutil==2.8.1
+PyYAML==5.4.1
 ros-buildfarm==3.0.0
-rosdistro==0.9.1
-rosinstall-generator==0.1.23
-rospkg==1.5.1
-six==1.16.0
-vcstool==0.3.0
-Werkzeug==3.0.3
+rosdistro==0.8.3
+rosinstall-generator==0.1.22
+rospkg==1.2.10
+six==1.15.0
+vcstool==0.2.15
+Werkzeug==1.0.1