ARG img_version FROM pandemonium-fedora:${img_version} ENV EMSCRIPTEN_VERSION=3.1.53 RUN git clone --branch ${EMSCRIPTEN_VERSION} --progress https://github.com/emscripten-core/emsdk && \ emsdk/emsdk install ${EMSCRIPTEN_VERSION} && \ emsdk/emsdk activate ${EMSCRIPTEN_VERSION} CMD /bin/bash