diff --git a/Dockerfile b/Dockerfile
index 3b4ae8d..a6b362d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,11 +12,9 @@ WORKDIR /piper
 RUN apt-get update \
  && apt-get install -y --no-install-recommends \
       build-essential \
-      cmake \
       espeak-ng \
       git \
       ninja-build \
-      pkg-config \
       python3 \
       python3-dev \
       python3-venv \
@@ -27,8 +25,16 @@ RUN git clone --depth 1 https://github.com/OHF-voice/piper1-gpl.git .
 RUN python3 -m venv ${VENV_PATH}
 
 RUN pip install --upgrade pip wheel setuptools \
- && pip install --no-cache-dir cmake scikit-build \
- && pip install --no-cache-dir -e '.[train]'
+ && pip install --no-cache-dir numpy cython cmake scikit-build onnx onnxruntime-gpu
+
+RUN echo "torch==2.4.*" > /tmp/constraints.txt \
+ && echo "torchvision==0.19.*" >> /tmp/constraints.txt \
+ && echo "torchaudio==2.4.*" >> /tmp/constraints.txt
+
+RUN pip install --no-cache-dir torch==2.4.* torchvision==0.19.* torchaudio==2.4.* \
+    --index-url https://download.pytorch.org/whl/cu121
+
+RUN pip install --no-cache-dir -e '.[train]' -c /tmp/constraints.txt
 
 RUN ./build_monotonic_align.sh \
  && python3 setup.py build_ext --inplace
diff --git a/entrypoint.sh b/entrypoint.sh
index 1f1dce4..6529c25 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -3,24 +3,34 @@
 set -e
 
 CKPT_DIR="/piper/lightning_logs"
-CKPT=""
+VOICE_NAME=${VOICE_NAME:-pt_BR-well}
+
+latest_checkpoint() {
+  ls -t ${CKPT_DIR}/version_*/checkpoints/*.ckpt | head -n1
+}
 
 if compgen -G "${CKPT_DIR}/version_*/checkpoints/*.ckpt" > /dev/null; then
-  CKPT=$(ls -t ${CKPT_DIR}/version_*/checkpoints/*.ckpt | head -n1)
+  CKPT=$(latest_checkpoint)
   RESUME_ARG="--ckpt_path $CKPT"
 
   echo "Resuming: $CKPT"
 fi
 
-exec python3 -m piper.train fit \
-  --data.voice_name pt_BR-well \
+python3 -m piper.train fit \
+  --data.voice_name $VOICE_NAME \
   --data.espeak_voice pt-br \
   --data.audio_dir /data/wav/ \
   --data.batch_size 16 \
   --data.cache_dir /data/.cache/ \
-  --data.config_path /data/config.json \
+  --data.config_path /data/${VOICE_NAME}-medium.onnx.json \
   --data.csv_path /data/metadata.csv \
   --model.sample_rate 22050 \
   --trainer.check_val_every_n_epoch 1 \
   --trainer.max_epochs 10000 \
   $RESUME_ARG
+
+CKPT=$(latest_checkpoint)
+
+python3 -m piper.train.export_onnx \
+  --checkpoint $CKPT \
+  --output-file /data/${VOICE_NAME}-medium.onnx