chore(docker): add aac-encoder plugin to bundled images

Add a dedicated build stage for the aac-encoder plugin in the demo,
full, and full-gpu Dockerfiles. The plugin depends on libfdk-aac-dev
at build time and libfdk-aac2 at runtime. No models are required.

The GPU image uses a standard rust:1.92-slim-bookworm base for the
aac-encoder stage since AAC encoding is CPU-only (no CUDA needed).

Signed-off-by: StreamKit Devin <devin@streamkit.dev>
Co-Authored-By: Claudio Costa <cstcld91@gmail.com>

Author: streamkit-devin

Dockerfile.demo

@@ -528,7 +528,36 @@ RUN mkdir -p /build/models && \
     tar xf supertonic-v2-onnx.tar.bz2 && \
     rm supertonic-v2-onnx.tar.bz2
 
-# Stage 13: Build Slint UI plugin
+# Stage 13: Build AAC Encoder plugin
+FROM rust:1.92-slim-bookworm AS aac-encoder-builder
+
+WORKDIR /build
+
+# Install build dependencies (libfdk-aac-dev needed by shiguredo_fdk_aac)
+RUN apt-get update && apt-get install -y \
+    pkg-config \
+    libssl-dev \
+    libclang-dev \
+    clang \
+    libfdk-aac-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy only what's needed to build aac-encoder plugin
+COPY Cargo.toml Cargo.lock ./
+COPY crates/core ./crates/core
+COPY sdks/plugin-sdk ./sdks/plugin-sdk
+COPY plugins/native/aac-encoder ./plugins/native/aac-encoder
+
+# Build aac-encoder plugin
+RUN --mount=type=cache,id=cargo-registry-aac-encoder,target=/usr/local/cargo/registry \
+    --mount=type=cache,id=cargo-git-aac-encoder,target=/usr/local/cargo/git \
+    --mount=type=cache,id=aac-encoder-target,target=/build/plugins/native/aac-encoder/target \
+    cd plugins/native/aac-encoder && \
+    cargo build --release --target-dir target && \
+    mkdir -p /build/plugins/native && \
+    cp target/release/libaac_encoder.so /build/plugins/native/
+
+# Stage 14: Build Slint UI plugin
 FROM rust:1.92-slim-bookworm AS slint-builder
 
 WORKDIR /build
@@ -573,6 +602,7 @@ RUN apt-get update && apt-get install -y \
     libgomp1 \
     libfontconfig1 \
     fonts-dejavu-core \
+    libfdk-aac2 \
     gdb \
     curl \
     && rm -rf /var/lib/apt/lists/*
@@ -630,6 +660,9 @@ COPY --chown=app:app --from=supertonic-builder /build/models/supertonic-v2-onnx
 # Copy slint plugin (no models needed)
 COPY --chown=app:app --from=slint-builder /build/plugins/native/* /opt/streamkit/plugins/native/
 
+# Copy aac-encoder plugin (no models needed)
+COPY --chown=app:app --from=aac-encoder-builder /build/plugins/native/* /opt/streamkit/plugins/native/
+
 # Copy sample pipelines + small bundled audio samples (Opus/Ogg only)
 COPY --chown=app:app samples/pipelines /opt/streamkit/samples/pipelines
 COPY --chown=app:app samples/audio/system/*.ogg samples/audio/system/*.ogg.license /opt/streamkit/samples/audio/system/

Dockerfile.full

@@ -467,7 +467,36 @@ RUN PIP_BREAK_SYSTEM_PACKAGES=1 pip3 install --no-cache-dir huggingface-hub && \
     cd /build/models && \
     python3 -c "from huggingface_hub import snapshot_download; snapshot_download('entai2965/nllb-200-distilled-600M-ctranslate2', local_dir='nllb-200-distilled-600M-ct2-int8', local_dir_use_symlinks=False)"
 
-# Stage 11: Build Slint UI plugin
+# Stage 11: Build AAC Encoder plugin
+FROM rust:1.92-slim-bookworm AS aac-encoder-builder
+
+WORKDIR /build
+
+# Install build dependencies (libfdk-aac-dev needed by shiguredo_fdk_aac)
+RUN apt-get update && apt-get install -y \
+    pkg-config \
+    libssl-dev \
+    libclang-dev \
+    clang \
+    libfdk-aac-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy only what's needed to build aac-encoder plugin
+COPY Cargo.toml Cargo.lock ./
+COPY crates/core ./crates/core
+COPY sdks/plugin-sdk ./sdks/plugin-sdk
+COPY plugins/native/aac-encoder ./plugins/native/aac-encoder
+
+# Build aac-encoder plugin
+RUN --mount=type=cache,id=cargo-registry-aac-encoder,target=/usr/local/cargo/registry \
+    --mount=type=cache,id=cargo-git-aac-encoder,target=/usr/local/cargo/git \
+    --mount=type=cache,id=aac-encoder-target,target=/build/plugins/native/aac-encoder/target \
+    cd plugins/native/aac-encoder && \
+    cargo build --release --target-dir target && \
+    mkdir -p /build/plugins/native && \
+    cp target/release/libaac_encoder.so /build/plugins/native/
+
+# Stage 12: Build Slint UI plugin
 FROM rust:1.92-slim-bookworm AS slint-builder
 
 WORKDIR /build
@@ -512,6 +541,7 @@ RUN apt-get update && apt-get install -y \
     libgomp1 \
     libfontconfig1 \
     fonts-dejavu-core \
+    libfdk-aac2 \
     gdb \
     curl \
     && rm -rf /var/lib/apt/lists/*
@@ -563,6 +593,9 @@ COPY --chown=app:app --from=matcha-builder /build/models/matcha-icefall-en_US-lj
 # Copy slint plugin (no models needed)
 COPY --chown=app:app --from=slint-builder /build/plugins/native/* /opt/streamkit/plugins/native/
 
+# Copy aac-encoder plugin (no models needed)
+COPY --chown=app:app --from=aac-encoder-builder /build/plugins/native/* /opt/streamkit/plugins/native/
+
 # Copy sample pipelines
 COPY --chown=app:app samples /opt/streamkit/samples
 

Dockerfile.full-gpu

@@ -590,7 +590,36 @@ RUN PIP_BREAK_SYSTEM_PACKAGES=1 pip3 install --no-cache-dir \
       tokenizers && \
     python3 plugins/native/helsinki/download-models.py
 
-# Stage 12: Build Slint UI plugin
+# Stage 12: Build AAC Encoder plugin (CPU-only, no CUDA needed for audio encoding)
+FROM rust:1.92-slim-bookworm AS aac-encoder-builder
+
+WORKDIR /build
+
+# Install build dependencies (libfdk-aac-dev needed by shiguredo_fdk_aac)
+RUN apt-get update && apt-get install -y \
+    pkg-config \
+    libssl-dev \
+    libclang-dev \
+    clang \
+    libfdk-aac-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy only what's needed to build aac-encoder plugin
+COPY Cargo.toml Cargo.lock ./
+COPY crates/core ./crates/core
+COPY sdks/plugin-sdk ./sdks/plugin-sdk
+COPY plugins/native/aac-encoder ./plugins/native/aac-encoder
+
+# Build aac-encoder plugin
+RUN --mount=type=cache,id=cargo-registry-aac-encoder,target=/usr/local/cargo/registry \
+    --mount=type=cache,id=cargo-git-aac-encoder,target=/usr/local/cargo/git \
+    --mount=type=cache,id=aac-encoder-target,target=/build/plugins/native/aac-encoder/target \
+    cd plugins/native/aac-encoder && \
+    cargo build --release --target-dir target && \
+    mkdir -p /build/plugins/native && \
+    cp target/release/libaac_encoder.so /build/plugins/native/
+
+# Stage 13: Build Slint UI plugin
 FROM rust:1.92-slim-bookworm AS slint-builder
 
 WORKDIR /build
@@ -638,6 +667,7 @@ RUN apt-get update && apt-get install -y \
     libgomp1 \
     libfontconfig1 \
     fonts-dejavu-core \
+    libfdk-aac2 \
     libvulkan1 \
     gdb \
     curl \
@@ -709,6 +739,9 @@ COPY --chown=app:app --from=matcha-builder /build/models/matcha-icefall-en_US-lj
 # Copy slint plugin (no models needed)
 COPY --chown=app:app --from=slint-builder /build/plugins/native/* /opt/streamkit/plugins/native/
 
+# Copy aac-encoder plugin (no models needed)
+COPY --chown=app:app --from=aac-encoder-builder /build/plugins/native/* /opt/streamkit/plugins/native/
+
 # Copy sample pipelines
 COPY --chown=app:app samples /opt/streamkit/samples