ARG BASE_IMAGE=opensearchproject/opensearch:latest
FROM ${BASE_IMAGE}

# Switch to root user to install packages
USER root

# Install dependencies for configuration
RUN if command -v dnf >/dev/null 2>&1; then \
        echo "Installing with dnf" && \
        dnf install -y gettext jq && \
        dnf clean all; \
    elif command -v yum >/dev/null 2>&1; then \
        echo "Installing with yum" && \
        yum install -y gettext jq && \
        yum clean all; \
    elif command -v microdnf >/dev/null 2>&1; then \
        echo "Installing with microdnf" && \
        microdnf install -y gettext jq && \
        microdnf clean all; \
    elif command -v apt-get >/dev/null 2>&1; then \
        echo "Installing with apt-get" && \
        apt-get update -y && \
        apt-get install -y gettext-base jq && \
        apt-get clean && \
        rm -rf /var/lib/apt/lists/*; \
    else \
        echo "No package manager found! Checking if envsubst and jq are already available..." && \
        command -v envsubst || echo "envsubst not found" && \
        command -v jq || echo "jq not found"; \
    fi

# Copy configuration files and scripts
COPY rootfs/ /

# Create directories and set permissions
RUN mkdir -p /usr/share/opensearch/config/jvm.options.d && \
    chown -R opensearch:opensearch /usr/share/opensearch && \
    chmod +x /usr/bin/configure-opensearch

# Switch back to opensearch user
USER opensearch

# Use our custom entrypoint script
ENTRYPOINT ["/usr/bin/configure-opensearch"]