Upgrade to mattermost 5.0.0 (#284)

* Upgrade to mattermost 5.0.0

Changelog: https://docs.mattermost.com/administration/changelog.html#release-v5-0

* Change binary name to `mattermost`

As described in the [changelog](https://forum.mattermost.org/t/upcoming-changes-with-mattermost-v5-0/5119).

app/Dockerfile

@@ -2,7 +2,7 @@ FROM alpine:3.6
 
 # Some ENV variables
 ENV PATH="/mattermost/bin:${PATH}"
-ENV MM_VERSION=4.10.1
+ENV MM_VERSION=5.0.0
 
 # Build argument to set Mattermost edition
 ARG edition=enterprise
@@ -44,7 +44,7 @@ HEALTHCHECK CMD curl --fail http://localhost:8000 || exit 1
 COPY entrypoint.sh /
 ENTRYPOINT ["/entrypoint.sh"]
 WORKDIR /mattermost
-CMD ["platform"]
+CMD ["mattermost"]
 
 # Expose port 8000 of the container
 EXPOSE 8000

app/entrypoint.sh

@@ -14,10 +14,10 @@ MM_DBNAME=${MM_DBNAME:-mattermost}
 MM_CONFIG=${MM_CONFIG:-/mattermost/config/config.json}
 
 if [ "${1:0:1}" = '-' ]; then
-    set -- platform "$@"
+    set -- mattermost "$@"
 fi
 
-if [ "$1" = 'platform' ]; then
+if [ "$1" = 'mattermost' ]; then
   # Check CLI args for a -config option
   for ARG in $@;
   do
@@ -77,7 +77,7 @@ if [ "$1" = 'platform' ]; then
   # Necessary to avoid "panic: Failed to open sql connection pq: the database system is starting up"
   sleep 1
 
-  echo "Starting platform"
+  echo "Starting mattermost"
 fi
 
 exec "$@"