Run in Python 3.8

Use image recommended by SECCOM

Issue-ID: DCAEGEN2-2292

Signed-off-by: Michal Jagiello <michal.jagiello@t-mobile.pl>
Change-Id: I230eb5d50cce46659752206a2435242923725189
diff --git a/components/pm-subscription-handler/Dockerfile b/components/pm-subscription-handler/Dockerfile
index 566b2ab..a30c348 100644
--- a/components/pm-subscription-handler/Dockerfile
+++ b/components/pm-subscription-handler/Dockerfile
@@ -1,5 +1,6 @@
 # ============LICENSE_START===================================================
 #  Copyright (C) 2020 Nordix Foundation.
+#  Copyright 2020 Deutsche Telekom. All rights reserved.
 # ============================================================================
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,28 +17,27 @@
 # SPDX-License-Identifier: Apache-2.0
 # ============LICENSE_END=====================================================
 
-FROM python:3.7-slim-buster
+FROM python:3.8.2-alpine3.11
 MAINTAINER lego@est.tech
 
-ENV PMSHUSER=pmsh \
-    APPDIR="/opt/app/pmsh" \
-    # set PATH & PYTHONPATH vars
-    PATH=/usr/local/lib/python3.7/bin:$PATH:$APPDIR/bin \
-    PYTHONPATH=/usr/local/lib/python3.7/site-packages:./mod:./:$PYTHONPATH:$APPDIR/bin \
+ARG user=onap
+ARG group=onap
+
+WORKDIR /app
+
+# set PATH & PYTHONPATH vars
+ENV PATH=/usr/local/lib/python3.8/bin:$PATH:./bin \
+    PYTHONPATH=/usr/local/lib/python3.8/site-packages:./mod:./:$PYTHONPATH:./bin \
     REQUESTS_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt \
     LOGS_PATH="/var/log/ONAP/dcaegen2/services/pmsh" \
     LOGGER_CONFIG=/opt/app/pmsh/log_config.yaml
 
-WORKDIR $APPDIR
-
     # add non root user & group
-RUN addgroup --system $PMSHUSER && adduser --ingroup $PMSHUSER --system $PMSHUSER && \
+RUN addgroup --system $user && adduser --ingroup $user --system $user && \
     # create and chown the LOGS_PATH
-    apt-get update && \
-    apt-get install -y --no-install-recommends vim-tiny && \
-    apt-get clean && rm -rf /var/lib/apt/lists/* && \
+    apk add build-base libffi-dev postgresql-dev && \
     mkdir -p $LOGS_PATH && \
-    chown -R $PMSHUSER:$PMSHUSER $LOGS_PATH
+    chown -R $user:$group $LOGS_PATH
 
 COPY setup.py ./
 COPY requirements.txt ./
@@ -49,11 +49,8 @@
     pip install -r requirements.txt && \
     pip install -e . && \
     # change own & perms on entrypoint
-    chown -R $PMSHUSER:$PMSHUSER $APPDIR && \
-    chmod 500 $APPDIR/bin/*.py
-
-# set to non root user
-USER $PMSHUSER
+    chown -R $user:$group . && \
+    chmod 500 ./bin/*.py
 
 # run the app
 ENTRYPOINT ["python", "./bin/pmsh_service_main.py"]
\ No newline at end of file