Experimental Docker build

.dockerignore

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+Dockerfile
+build/
+build-*/
+sources
+minetest
+www
+.git
+.github
+upload.sh

.github/workflows/build.yml

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+name: build
+
+on: push
+
+jobs:
+  docker:
+    name: "Build Docker Image"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build docker image
+        run: |
+          docker build . -t mtweb
+          docker run --rm mtweb node --experimental-wasm-threads /minetest-wasm/www/minetest.js

Dockerfile

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+FROM ubuntu:22.04
+
+# install deps
+RUN \
+	   apt-get update \
+	&& DEBIAN_FRONTEND=noninteractive TZ=Etc/UTC apt-get install -y \
+		wget \
+		python3 \
+		git \
+		build-essential \
+		cmake \
+		tclsh \
+		zip
+
+COPY . /minetest-wasm
+
+# Install emsdk
+RUN \
+	   cd "$HOME" \
+	&& echo "Building from $(pwd)" \
+	&& git clone --depth 1 https://github.com/emscripten-core/emsdk.git \
+	&& cd emsdk \
+	&& ./emsdk install latest \
+	&& ./emsdk activate latest
+
+# Build minetest-wasm
+RUN \
+	   cd "$HOME"/emsdk \
+	&& . ./emsdk_env.sh \
+	&& cd /minetest-wasm \
+	&& ./apply_patches.sh \
+	&& ls -la \
+	&& ./build_all.sh