Fix docker startup so that it works properly with stdio mode. Probably worthwhile to toss majority of this readme, less confusing

Dockerfile

@@ -2,18 +2,16 @@
 # Creates a production-ready container for the MCP server without requiring local Elixir/OTP installation
 
 # Build stage - Use official Elixir image with OTP
-FROM elixir:1.16-otp-26-alpine AS builder
+FROM elixir:1.18 AS builder
 
-# Install build dependencies
-RUN apk add --no-cache \
-    build-base \
+
+# Set environment variables
+RUN apt-get update && apt-get install -y \
     git \
     curl \
-    bash
-
-# Install Node.js and npm for MCP external servers (bunx dependency)
-RUN apk add --no-cache nodejs npm
-RUN npm install -g bun
+    bash \
+    unzip \
+    zlib1g
 
 # Set build environment
 ENV MIX_ENV=prod
@@ -22,79 +20,30 @@ ENV MIX_ENV=prod
 WORKDIR /app
 
 # Copy mix files
-COPY mix.exs mix.lock ./
+COPY lib lib
+COPY mcp_servers.json \
+    mcp_interfaces_config.json \
+    mix.exs \
+    mix.lock \
+    docker-entrypoint.sh ./
+COPY scripts ./scripts/
+
 
 # Install mix dependencies
-RUN mix local.hex --force && \
-    mix local.rebar --force && \
-    mix deps.get --only $MIX_ENV && \
-    mix deps.compile
-
-# Copy source code
-COPY lib lib
-COPY config config
-
-# Compile the release
+RUN mix deps.get
+RUN mix deps.compile
 RUN mix compile
-
-# Prepare release
 RUN mix release
+RUN chmod +x ./docker-entrypoint.sh ./scripts/mcp_launcher.sh
+RUN curl -fsSL https://bun.sh/install | bash
+RUN ln -s /root/.bun/bin/* /usr/local/bin/
 
-# Runtime stage - Use smaller Alpine image
-FROM alpine:3.18 AS runtime
-
-# Install runtime dependencies
-RUN apk add --no-cache \
-    bash \
-    openssl \
-    ncurses-libs \
-    libstdc++ \
-    nodejs \
-    npm
-
-# Install Node.js packages for external MCP servers
-RUN npm install -g bun
-
-# Create non-root user for security
-RUN addgroup -g 1000 appuser && \
-    adduser -u 1000 -G appuser -s /bin/bash -D appuser
-
-# Create app directory and set permissions
-WORKDIR /app
-RUN chown -R appuser:appuser /app
-
-# Copy the release from builder stage
-COPY --from=builder --chown=appuser:appuser /app/_build/prod/rel/agent_coordinator ./
-
-# Copy configuration files
-COPY --chown=appuser:appuser mcp_servers.json ./
-COPY --chown=appuser:appuser scripts/mcp_launcher.sh ./scripts/
-
-# Make scripts executable
-RUN chmod +x ./scripts/mcp_launcher.sh
-
-# Copy Docker entrypoint script
-COPY --chown=appuser:appuser docker-entrypoint.sh ./
-RUN chmod +x ./docker-entrypoint.sh
-
-# Switch to non-root user
-USER appuser
-
-# Set environment variables
-ENV MIX_ENV=prod
 ENV NATS_HOST=localhost
 ENV NATS_PORT=4222
 ENV SHELL=/bin/bash
 
-# Expose the default port (if needed for HTTP endpoints)
 EXPOSE 4000
 
-# Health check
-HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
-    CMD /app/bin/agent_coordinator ping || exit 1
-
-# Set the entrypoint
 ENTRYPOINT ["/app/docker-entrypoint.sh"]
 
-# Default command
-CMD ["/app/scripts/mcp_launcher.sh"]
+CMD ["/app/scripts/mcp_launcher.sh"]