updated dockerfile and deployment

Dockerfile

@@ -6,23 +6,33 @@ ARG MM_VERSION=11.4.0
 ARG MM_PACKAGE=mattermost-${MM_VERSION}-linux-amd64.tar.gz
 
 # Set environment variables
-ENV PATH="/mattermost/bin:${PATH}"
+# We include the bin in the PATH and explicitly set the working dir
+ENV PATH="/opt/mattermost/bin:${PATH}"
 ENV MM_INSTALL_TYPE=docker
 
 # 1. Install necessary dependencies
-# 2. Create mattermost user/group for security
-# 3. Download and extract the binary
+# 2. Create mattermost user/group
+# 3. Create the target directory FIRST
+# 4. Download, extract, and move
 RUN microdnf update -y && \
     microdnf install -y tar gzip shadow-utils ca-certificates findutils && \
     groupadd -g 2000 mattermost && \
     useradd -u 2000 -g mattermost -m -s /sbin/nologin mattermost && \
+    # Create the directory before moving things into it
+    mkdir -p /opt/mattermost && \
     curl -L https://releases.mattermost.com/${MM_VERSION}/${MM_PACKAGE} | tar -xz && \
-    mkdir -p /mattermost/data /mattermost/plugins /mattermost/client/plugins && \
-    chown -R mattermost:mattermost /mattermost && \
+    # Move extracted contents into /opt/mattermost
+    mv mattermost/* /opt/mattermost/ && \
+    rm -rf mattermost && \
+    # Create required subdirectories
+    mkdir -p /opt/mattermost/config /opt/mattermost/data /opt/mattermost/logs \
+             /opt/mattermost/plugins /opt/mattermost/client/plugins /opt/mattermost/bleve-indexes && \
+    # Fix permissions
+    chown -R mattermost:mattermost /opt/mattermost && \
     microdnf clean all
 
-# Set the working directory
-WORKDIR /mattermost
+# Set the working directory - Mattermost looks for config/ relative to this path
+WORKDIR /opt/mattermost
 
 # Mattermost uses these ports
 EXPOSE 8065 8067
@@ -31,4 +41,5 @@ EXPOSE 8065 8067
 USER mattermost
 
 # Start the Mattermost server
-CMD ["mattermost"]
+# Explicitly point to the config file to avoid the "Permission Denied" on /mattermost
+CMD ["mattermost", "--config", "/opt/mattermost/config/config.json"]