use emsdk instead of emscripten debian package

Dockerfile

@@ -5,12 +5,13 @@
 FROM nephatrine/nxbuilder:debian
 LABEL maintainer="Daniel Wolf <nephatrine@gmail.com>"
 
-ARG DEBIAN_FRONTEND=noninteractive
+ENV EMSCRIPTEN_PATH=/opt/emsdk
 RUN echo "====== INSTALL EMSCRIPTEN ======" \
- && apt-get update \
- && apt-get -o Dpkg::Options::="--force-confnew" install -y --no-install-recommends emscripten \
- && apt-get autoremove -y && apt-get clean \
+ && git -C /opt clone https://github.com/emscripten-core/emsdk.git && cd /opt/emsdk \
+ && ./emsdk install latest --shallow --generator=Ninja \
+ && ./emsdk activate latest \
  && rm -rf /tmp/* /var/tmp/*
+ENV PATH=${EMSCRIPTEN_PATH}:${EMSCRIPTEN_PATH}/upstream/emscripten:$PATH
 
 ENV WASI_VERSION=20
 RUN echo "====== INSTALL WASI-SDK ======" \
@@ -26,7 +27,7 @@ RUN echo "====== TEST TOOLCHAINS ======" \
  && git -C ${HOME} clone --single-branch --depth=1 https://code.nephatrine.net/nephatrine/hello-test.git \
  && mkdir /tmp/build-emscripten && cd /tmp/build-emscripten \
  && nxbuild-emscripten -GNinja ${HOME}/hello-test \
- && ninja && file HelloTest \
+ && ninja && node HelloTest \
  && mkdir /tmp/build-wasi && cd /tmp/build-wasi \
  && nxbuild-wasi -GNinja ${HOME}/hello-test \
  && echo ninja \

override/usr/local/bin/nxbuild-emscripten

@@ -2,4 +2,4 @@
 # SPDX-FileCopyrightText: 2023 Daniel Wolf <nephatrine@gmail.com>
 #
 # SPDX-License-Identifier: ISC
-/usr/bin/cmake -DEMSCRIPTEN_SYSTEM_PROCESSOR="wasm32" -DCMAKE_TOOLCHAIN_FILE="/usr/share/emscripten/cmake/Modules/Platform/Emscripten.cmake" $@
+${EMSCRIPTEN_PATH}/upstream/emscripten/emcmake /usr/bin/cmake -DEMSCRIPTEN_SYSTEM_PROCESSOR="wasm32" $@