diff --git a/pica-mattermost/Dockerfile b/pica-mattermost/Dockerfile
index ac8f1485ebe2a4fcbf9953b0d56613df7bccc9c4..68a2d4585538868e253af4e2eea6dd5d9fd7e87f 100644
--- a/pica-mattermost/Dockerfile
+++ b/pica-mattermost/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.10
+FROM alpine:3.11
 
 # Some ENV variables
 ENV PATH="/mattermost/bin:${PATH}"
diff --git a/pica-mattermost/entrypoint.sh b/pica-mattermost/entrypoint.sh
index 437e24ae00922d4a6c2a26d27f89490339c0cbf6..3e571675d1521fc2a0c7c89aaeafb7be9f3b3d33 100644
--- a/pica-mattermost/entrypoint.sh
+++ b/pica-mattermost/entrypoint.sh
@@ -1,5 +1,10 @@
 #!/bin/sh
 
+# Function to generate a random salt
+generate_salt() {
+  tr -dc 'a-zA-Z0-9' < /dev/urandom | fold -w 48 | head -n 1
+}
+
 # Read environment variables or set default values
 DB_HOST=${DB_HOST:-db}
 DB_PORT_NUMBER=${DB_PORT_NUMBER:-5432}