diff --git a/.github/workflows/web.yml b/.github/workflows/web.yml
index 145d4b4b..3adf0517 100644
--- a/.github/workflows/web.yml
+++ b/.github/workflows/web.yml
@@ -13,7 +13,7 @@ env:
 
 jobs:
   linux-emscripten:
-    runs-on: ubuntu-latest
+    runs-on: emscripten/emsdk
 
     steps:
       - uses: actions/checkout@v2
@@ -26,8 +26,8 @@ jobs:
 #          path: /home/runner/.hunter
 #          key: ${{ runner.os }}-mobagen
 
-      - name: Emscripten Install
-        run: ./scripts/emscripten-install.sh || true
+#      - name: Emscripten Install
+#        run: ./scripts/emscripten-install.sh || true
 
       - name: Emscripten Build
         run: ./scripts/emscripten-build.sh
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ffc47064..675b01c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.23.2)
+cmake_minimum_required(VERSION 3.16.3)
 
 # CPM downloader
 include(external/cpm.cmake)
@@ -30,8 +30,10 @@ IF(EMSCRIPTEN)
 #    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --preload-file ${CMAKE_CURRENT_SOURCE_DIR}/assets/ -s WASM=0 -s DISABLE_EXCEPTION_CATCHING=2 --proxy-to-worker -s FETCH=1")
 #    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --preload-file ${CMAKE_CURRENT_SOURCE_DIR}/assets/")
 
-    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O0 -s WASM=0 -s FULL_ES2=1 -s USE_SDL=0 -s EXPORT_ALL=1")
-    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O0 -s WASM=0 -s FULL_ES2=1 -s USE_SDL=0 -s EXPORT_ALL=1")
+#    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O0 -s WASM=0 -s FULL_ES2=1 -s USE_SDL=0 -s EXPORT_ALL=1")
+#    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O0 -s WASM=0 -s FULL_ES2=1 -s USE_SDL=0 -s EXPORT_ALL=1")
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s USE_SDL=0 -s EXPORT_ALL=1")
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -s USE_SDL=0 -s EXPORT_ALL=1")
 
     add_definitions(-DASSET_DIR="${CMAKE_CURRENT_SOURCE_DIR}/assets/")
 
diff --git a/core2/CMakeLists.txt b/core2/CMakeLists.txt
deleted file mode 100644
index e69de29b..00000000
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 00000000..a16d0ca7
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,11 @@
+version: "3"
+services:
+  emsdk:
+    container_name: mobagen-emsdk
+    image: emscripten/emsdk
+    working_dir: /usr/src/mobagen
+    ports:
+      - "8000:8000"
+    volumes:
+      - .:/usr/src/mobagen
+    command: ./scripts/emscripten-build-and-run.sh
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index bc49695f..b1478a19 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -1,4 +1,4 @@
-include(filament.cmake)
+
 if(COMMAND cmake_policy)
     cmake_policy(SET CMP0003 NEW)
 endif(COMMAND cmake_policy)
@@ -30,9 +30,10 @@ ENDIF()
 
 add_definitions(-DHAVE_LIBC=OFF)
 
+#include(filament.cmake)
 include(sdl.cmake)
 include(glm.cmake)
 #include(glew.cmake)
 include(imgui.cmake)
 include(assimp.cmake)
-include(bullet.cmake)
\ No newline at end of file
+include(bullet.cmake)
diff --git a/scripts/emscripten-build-and-run.sh b/scripts/emscripten-build-and-run.sh
index b0aa2e32..fc7d5e3f 100755
--- a/scripts/emscripten-build-and-run.sh
+++ b/scripts/emscripten-build-and-run.sh
@@ -12,6 +12,8 @@ cd $DIRECTORY
 
 cd $DIRECTORY/../bin-emscripten/bin
 
-open "http://localhost:8000"
+#open "http://localhost:8000"
+
+echo hosting build at http://localhost:8000
 
 python3 -m http.server
diff --git a/scripts/emscripten-build.sh b/scripts/emscripten-build.sh
index 934fc02c..ec472c0b 100755
--- a/scripts/emscripten-build.sh
+++ b/scripts/emscripten-build.sh
@@ -4,11 +4,15 @@ DIRECTORY="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 mkdir -p "${DIRECTORY}"/../bin-emscripten/bin/
 
-cd $DIRECTORY/../external/emsdk
-
-source ./emsdk_env.sh
-
-export EMSCRIPTEN=${EMSDK}/upstream/emscripten
+if which emcmake >/dev/null; then
+    echo emsdk exists in path
+else
+    echo installing emsdk
+    ./emscripten-install.sh
+    cd $DIRECTORY/../external/emsdk
+    source ./emsdk_env.sh
+    export EMSCRIPTEN=${EMSDK}/upstream/emscripten
+fi
 
 cd $DIRECTORY/../