diff --git a/Dockerfile b/Dockerfile
index d702409..b064c4a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -35,13 +35,28 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     procps \
     && rm -rf /var/lib/apt/lists/*
 
-# Install dump1090 for ADS-B (package name varies by distribution)
-RUN apt-get update && \
-    (apt-get install -y --no-install-recommends dump1090-mutability || \
-     apt-get install -y --no-install-recommends dump1090-fa || \
-     apt-get install -y --no-install-recommends dump1090 || \
-     echo "Note: dump1090 not available in repos, ADS-B features limited") && \
-    rm -rf /var/lib/apt/lists/*
+# Build dump1090-fa from source (packages not available in slim repos)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    git \
+    pkg-config \
+    libncurses-dev \
+    && cd /tmp \
+    && git clone --depth 1 https://github.com/flightaware/dump1090.git \
+    && cd dump1090 \
+    && make \
+    && cp dump1090 /usr/bin/dump1090-fa \
+    && ln -s /usr/bin/dump1090-fa /usr/bin/dump1090 \
+    && cd /app \
+    && rm -rf /tmp/dump1090 \
+    # Cleanup build tools to reduce image size
+    && apt-get remove -y \
+        build-essential \
+        git \
+        pkg-config \
+        libncurses-dev \
+    && apt-get autoremove -y \
+    && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements first for better caching
 COPY requirements.txt .