avoid tail on inexistent file

entrypoint/main.sh

 #!/bin/bash
-MY_IP=$(hostname -i | awk '{ print $1 }')
 
+if [ "$(basename $1)" != "mysqld" ];
+then
+    exec "$@"
+    exit 0;
+fi
+
+touch "${MYSQL_LOG_FILE}"
+chown mysql: "${MYSQL_LOG_FILE}"
+chmod 666 "${MYSQL_LOG_FILE}"
+tail -F "${MYSQL_LOG_FILE}" 2>/dev/null &
+
+MY_IP=$(hostname -i | awk '{ print $1 }')
 first_time=0
 
 if [ -z "${CLUSTER_NAME}" ];
@@ -88,24 +99,15 @@ then
     done
 fi
 
-
-
-if [ "$(basename $1)" = "mysqld" ];
-then
-    tail -F "${MYSQL_LOG_FILE}" 2>/dev/null &
-
-    set -- "$@" "--defaults-file=/etc/mysql/my.cnf"
-    set -- "$@" "--user=mysql"
-    set -- "$@" "--datadir=${PXC_DATA}"
-    set -- "$@" "--log-bin=$CLUSTER_NAME-bin"
-    set -- "$@" "--explicit_defaults_for_timestamp=on"
-    set -- "$@" "--wsrep_cluster_name=$CLUSTER_NAME"
-    set -- "$@" "--wsrep_sst_method=xtrabackup-v2"
-    set -- "$@" "--wsrep_cluster_address=gcomm://$online"
-    set -- "$@" "--wsrep_sst_auth=xtrabackup:$XTRABACKUP_PASSWORD"
-    set -- "$@" "--wsrep_node_address=$MY_IP"
-    echo "$@" >&2
-    exec "$@"
-else
-    exec "$@"
-fi
+set -- "$@" "--defaults-file=/etc/mysql/my.cnf"
+set -- "$@" "--user=mysql"
+set -- "$@" "--datadir=${PXC_DATA}"
+set -- "$@" "--log-bin=$CLUSTER_NAME-bin"
+set -- "$@" "--explicit_defaults_for_timestamp=on"
+set -- "$@" "--wsrep_cluster_name=$CLUSTER_NAME"
+set -- "$@" "--wsrep_sst_method=xtrabackup-v2"
+set -- "$@" "--wsrep_cluster_address=gcomm://$online"
+set -- "$@" "--wsrep_sst_auth=xtrabackup:$XTRABACKUP_PASSWORD"
+set -- "$@" "--wsrep_node_address=$MY_IP"
+echo "$@" >&2
+exec "$@"