[#15] Build lameenc 1.3.1 manually

Dockerfile

@@ -1,13 +1,36 @@
-FROM python:3.8-alpine3.16
+FROM python:3.8-alpine3.16 as lameenc-build
+
+RUN apt install -y python-setuptools pip build-essential cmake
+
+ENV PATH="/opt/venv/bin:$PATH"
+
+RUN python3 -m venv /opt/venv
+
+# Install lameenc
+RUN mkdir -p /lib/lameenc
+WORKDIR /lib/lameenc
 
+RUN git clone --branch v1.3.1 --single-branch https://github.com/chrisstaite/lameenc /lib/lameenc
+
+RUN mkdir -p /lib/lameenc/build
+WORKDIR /lib/lameenc/build
+RUN cmake ..
+RUN make
+RUN pip install "lameenc-1.3.1-cp38-cp38-linux_aarch64.whl"
+
+FROM python:3.8-alpine3.16
 USER root
+ENV PATH="/opt/venv/bin:$PATH"
 ENV TORCH_HOME=/data/models
 ENV REQUIREMENTS_FILE=requirements_minimal.txt
 
+COPY --from=lameenc-build /opt/venv /opt/venv
+
 # Install needed packages
 RUN apk update && apk add \
     git \
     ffmpeg
+RUN python3 -m pip install --upgrade pip
 
 # Install Facebook Demucs
 RUN mkdir -p /lib/demucs
@@ -18,9 +41,7 @@ RUN git clone --depth 1 --branch main https://github.com/facebookresearch/demucs
 
 #RUN REQUIREMENTS_FILE=$([[ "${DEMUCS_VERSION}" == "minimal" ]] && echo "requirements_minimal.txt" || echo "requirements.txt")
 
-RUN echo "Requirements file: ${REQUIREMENTS_FILE}"
-RUN pip install https://github.com/chrisstaite/lameenc/archive/refs/tags/v1.4.1.zip
-RUN sed -i 's/lameenc>=1.2/lameenc==1.4.1/g' ${REQUIREMENTS_FILE} # Upgrade lameenc to 1.4.1 to support arm64
+RUN sed '/lameenc>=1.2/d' ${REQUIREMENTS_FILE}
 RUN python3 -m pip install -r ${REQUIREMENTS_FILE}
 RUN python3 -m demucs.separate -d cpu --mp3 test.mp3 # Trigger model download \
     && rm -r separated  # cleanup