start tb-postgres with 'thingsboard' user

@@ -20,13 +20,11 @@ RUN apt-get update
 RUN apt-get install -y curl
 RUN echo 'deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main' | tee --append /etc/apt/sources.list.d/pgdg.list > /dev/null
 RUN curl -L https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -
+ENV PG_MAJOR 11
 RUN apt-get update
 RUN apt-get install -y postgresql-11
 RUN update-rc.d postgresql disable
 
-RUN mkdir -p /var/log/postgres
-RUN chown -R postgres:postgres /var/log/postgres
-
 COPY logback.xml ${pkg.name}.conf start-db.sh stop-db.sh start-tb.sh upgrade-tb.sh install-tb.sh ${pkg.name}.deb /tmp/
 
 RUN chmod a+x /tmp/*.sh \
@@ -50,13 +48,29 @@ ENV DATABASE_TS_TYPE=sql
 ENV DATABASE_ENTITIES_TYPE=sql
 
 ENV PGDATA=/data/db
+ENV PATH=$PATH:/usr/lib/postgresql/$PG_MAJOR/bin
 
 ENV SPRING_JPA_DATABASE_PLATFORM=org.hibernate.dialect.PostgreSQLDialect
 ENV SPRING_DRIVER_CLASS_NAME=org.postgresql.Driver
 ENV SPRING_DATASOURCE_URL=jdbc:postgresql://localhost:5432/thingsboard
-ENV SPRING_DATASOURCE_USERNAME=postgres
+ENV SPRING_DATASOURCE_USERNAME=${pkg.user}
 ENV SPRING_DATASOURCE_PASSWORD=postgres
 
+
+ENV PGLOG=/var/log/postgres
+RUN mkdir -p $PGLOG
+RUN chown -R ${pkg.user}:${pkg.user} $PGLOG
+
+RUN chown -R ${pkg.user}:${pkg.user} /var/run/postgresql
+
+RUN mkdir -p /data
+RUN chown -R ${pkg.user}:${pkg.user} /data
+
+RUN chown -R ${pkg.user}:${pkg.user} /var/log/${pkg.name}
+RUN chmod 555 ${pkg.installFolder}/bin/${pkg.name}.jar
+
+USER ${pkg.user}
+
 EXPOSE 9090
 EXPOSE 1883
 EXPOSE 5683/udp

@@ -17,16 +17,15 @@
 
 firstlaunch=${DATA_FOLDER}/.firstlaunch
 
-export PG_CTL=$(find /usr/lib/postgresql/ -name pg_ctl)
+PG_CTL=$(find /usr/lib/postgresql/ -name pg_ctl)
 
 if [ ! -d ${PGDATA} ]; then
     mkdir -p ${PGDATA}
-    chown -R postgres:postgres ${PGDATA}
-    su postgres -c '${PG_CTL} initdb -U postgres'
+    ${PG_CTL} initdb
 fi
 
-su postgres -c '${PG_CTL} -l /var/log/postgres/postgres.log -w start'
+exec setsid nohup postgres >> ${PGLOG}/postgres.log 2>&1 &
 
 if [ ! -f ${firstlaunch} ]; then
-    su postgres -c 'psql -U postgres -d postgres -c "CREATE DATABASE thingsboard"'
+    psql -U ${pkg.user} -d postgres -c "CREATE DATABASE thingsboard"
 fi

@@ -15,6 +15,6 @@
 # limitations under the License.
 #
 
-export PG_CTL=$(find /usr/lib/postgresql/ -name pg_ctl)
+PG_CTL=$(find /usr/lib/postgresql/ -name pg_ctl)
 
-su postgres -c '${PG_CTL} stop'
+${PG_CTL} stop