upgrading base image

Dockerfile

@@ -1,24 +1,59 @@
-FROM docker:20.10.11
+FROM nvidia/cudagl:10.2-runtime-ubuntu18.04
 
 LABEL org.opencontainers.image.authors="[email protected]"
+LABEL org.opencontainers.image.source="https://github.com/ITISFoundation/ci-service-integration-library"
+LABEL org.opencontainers.image.licenses="MIT"
 
 ARG REPO_NAME="https://github.com/GitHK/osparc-simcore-forked.git"
 ARG BRANCH_NAME="service-integration-library-additions"
 ARG COMMIT_SHA="a2413944443f03074866d23172b32249140bd288"
 ARG CLONE_DIR="/opsarc"
+ARG PYTHON_VERSION="3.8.10"
+ARG DEBIAN_FRONTEND=noninteractive
 
-# install & activate python virtuelenv
-ENV VIRTUAL_ENV=/opt/venv
-ENV PATH="$VIRTUAL_ENV/bin:$PATH"
-RUN apk add git python3 py3-pip docker-compose && \
-    python3 -m venv $VIRTUAL_ENV && \
-    # cloning and and selecting branch
-    pip install --no-cache-dir --upgrade pip && \
-    git clone -n ${REPO_NAME} ${CLONE_DIR} && \
+#Set of all dependencies needed for pyenv to work on Ubuntu
+RUN apt-get update && \ 
+    apt-get install -y --no-install-recommends \
+    make \
+    build-essential \
+    libssl-dev \
+    zlib1g-dev \
+    libbz2-dev \
+    libreadline-dev \
+    libsqlite3-dev \
+    wget \
+    ca-certificates \
+    curl \
+    llvm \
+    libncurses5-dev \
+    xz-utils \
+    tk-dev \
+    libxml2-dev \
+    libxmlsec1-dev \
+    libffi-dev \
+    liblzma-dev \
+    mecab-ipadic-utf8 \
+    git
+
+# Set-up necessary Env vars for PyEnv
+ENV PYENV_ROOT="$HOME/.pyenv"
+ENV PATH $PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH
+# Install pyenv
+RUN set -ex && \
+    curl https://pyenv.run | bash && \
+    pyenv update && \
+    pyenv install ${PYTHON_VERSION} && \
+    pyenv global ${PYTHON_VERSION} && \
+    pyenv rehash && \
+    python --version
+
+# cloning and installing ooil
+RUN git clone -n ${REPO_NAME} ${CLONE_DIR} && \
     cd ${CLONE_DIR} && \
     git checkout -b ${BRANCH_NAME} ${COMMIT_SHA} && \
     # install ooil and requirements
     cd ${CLONE_DIR}/packages/service-integration && \
+    pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir -r requirements/prod.txt && \
     pip install --no-cache-dir . && \
     cd / && \