Install 'git' 2.39 to patch for CVE

Author: dev-dull

Dockerfile

@@ -4,6 +4,12 @@ ENV PTBT_DATADIR="${PTBT_WORKDIR}/data"
 ENV PTBT_USER="tfbackendsvc"
 COPY . "${PTBT_WORKDIR}"
 RUN mkdir "${PTBT_DATADIR}"
+
+# Patch for Git CVE - remove when git version >= 2.39
+RUN apt-get update
+RUN apt install software-properties-common -y
+RUN add-apt-repository ppa:git-core/ppa -y
+
 RUN apt-get update
 RUN apt-get dist-upgrade -y
 RUN apt-get install python3 python3-pip python3-setuptools net-tools openssh-client sudo git -y