# Use RHEL 9 UBI as the base
FROM registry.access.redhat.com/ubi9/ubi-minimal:latest

# Define Mattermost version and architecture
ARG MM_VERSION=11.4.0
ARG MM_PACKAGE=mattermost-${MM_VERSION}-linux-amd64.tar.gz

# Set environment variables
ENV PATH="/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
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 && \
    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 && \
    microdnf clean all

# Set the working directory
WORKDIR /mattermost

# Mattermost uses these ports
EXPOSE 8065 8067

# Switch to non-root user
USER mattermost

# Start the Mattermost server
CMD ["mattermost"]