diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..560d92e
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,7 @@
+node_modules
+android/build
+android/app/build
+android/.gradle
+.gradle
+ios/build
+.git
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..a9626bf
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,48 @@
+FROM ubuntu:22.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# System dependencies
+RUN apt-get update && apt-get install -y \
+    curl unzip wget git openjdk-17-jdk-headless \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
+
+# Node.js 18 (required for RN 0.73 CLI compatibility)
+RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
+    && apt-get install -y nodejs \
+    && rm -rf /var/lib/apt/lists/*
+
+# Android SDK
+ENV ANDROID_HOME=/opt/android-sdk
+ENV PATH=$PATH:$ANDROID_HOME/cmdline-tools/latest/bin:$ANDROID_HOME/platform-tools
+
+RUN mkdir -p $ANDROID_HOME/cmdline-tools && \
+    wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O /tmp/cmdline-tools.zip && \
+    unzip -q /tmp/cmdline-tools.zip -d /tmp/cmdline-tools && \
+    mv /tmp/cmdline-tools/cmdline-tools $ANDROID_HOME/cmdline-tools/latest && \
+    rm /tmp/cmdline-tools.zip
+
+# Accept licenses and install exact SDK components
+RUN yes | sdkmanager --licenses > /dev/null 2>&1 && \
+    sdkmanager \
+        "platform-tools" \
+        "platforms;android-35" \
+        "build-tools;35.0.0" \
+        "ndk;25.1.8937393"
+
+ENV ANDROID_NDK_HOME=$ANDROID_HOME/ndk/25.1.8937393
+
+WORKDIR /app
+
+# Install JS dependencies
+COPY package.json package-lock.json ./
+COPY patches/ ./patches/
+RUN npm ci
+
+# Copy rest of the project
+COPY . .
+
+# Build release AAB by default; override CMD for APK
+CMD ["bash", "-c", "cd android && ./gradlew bundleRelease"]