AIRAVATA-3342 Upgrade pip before installing dependencies from git

Author: machristie

Dockerfile

@@ -67,6 +67,7 @@ WORKDIR /code
 COPY requirements.txt requirements-mysql.txt ./
 COPY setup.* ./
 COPY README.md .
+RUN pip install --upgrade pip
 RUN pip install -r requirements.txt
 RUN pip install -r requirements-mysql.txt
 

README.md

@@ -31,6 +31,7 @@ install
     cd airavata-django-portal
     python3 -m venv venv
     source venv/bin/activate
+    pip install --upgrade pip
     pip install -r requirements.txt
     ```