Add freedmr group to container

docker-configs/Dockerfile-ci

@@ -21,7 +21,8 @@ ENTRYPOINT [ "/entrypoint" ]
 
 COPY . /opt/freedmr
 
-RUN adduser -D -u 54000 radio && \
+RUN     addgroup -g 54000 freedmr && \
+        adduser -D -u 54000 -G 54000 freedmr && \
         apk update && \
         apk add git gcc musl-dev && \
         cd /opt && \
@@ -29,10 +30,10 @@ RUN adduser -D -u 54000 radio && \
 	ls -lah && \
         pip install --no-cache-dir -r requirements.txt && \
         apk del git gcc musl-dev && \
-        chown -R radio: /opt/freedmr && \
+        chown -R freedmr: /opt/freedmr && \
         mkdir /run/priv_control/ && \
-        chown -R radio: /run/priv_control
+        chown -R freedmr: /run/priv_control
 
 COPY docker-configs/entrypoint-proxy /entrypoint
-USER radio
+USER freedmr