diff --git a/.dockerignore b/.dockerignore
index c3fba8c..a789650 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1 +1,2 @@
 /.git
+/Dockerfile
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 294e7d2..52f8989 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -19,7 +19,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 13.x]
+        node-version: [12.x, 13.x, 20.x]
 
     steps:
     - uses: actions/checkout@v2
@@ -47,8 +47,8 @@ jobs:
     - run: npm run doc
     - run: npm run test
     - run: npm run report-coverage
-    - run: npm run format && git diff --exit-code
-      if: ${{ matrix.node-version == '13.x' }}
+    - run: npm run format && git checkout package-lock.json && git diff --exit-code
+      if: ${{ matrix.node-version == '20.x' }}
 
   docker:
     runs-on: ubuntu-latest
diff --git a/Dockerfile b/Dockerfile
index b52ec66..abe570d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,34 +1,44 @@
-FROM ubuntu:22.04
+FROM alpine:3.19.0
 
-RUN apt-get update && \
- DEBIAN_FRONTEND="noninteractive" apt-get install -y --no-install-recommends \
- ca-certificates \
- build-essential \
- cmake \
- git \
- libopus-dev \
- libsodium-dev \
- libvpx-dev \
- ninja-build \
- nodejs \
- npm \
- pkg-config \
- && apt-get clean \
- && rm -rf /var/lib/apt/lists/*
+RUN ["apk", "add", "--no-cache", \
+ "cmake", \
+ "diffutils", \
+ "g++", \
+ "gcc", \
+ "git", \
+ "libsodium-dev", \
+ "libvpx-dev", \
+ "linux-headers", \
+ "make", \
+ "musl-dev", \
+ "npm", \
+ "opus-dev", \
+ "pkgconfig", \
+ "python3", \
+ "samurai"]
 
 WORKDIR /work/c-toxcore
-RUN git clone --depth=1 --recurse-submodules --shallow-submodules --branch=master https://github.com/TokTok/c-toxcore.git /work/c-toxcore
-RUN cmake -B_build -H. -GNinja
-RUN cmake --build _build --target install
+RUN ["git", "clone", "--depth=1", \
+ "--recurse-submodules", "--shallow-submodules", \
+ "--branch=master", \
+ "https://github.com/TokTok/c-toxcore.git", "/work/c-toxcore"]
+RUN ["cmake", "-B_build", "-H.", "-GNinja", "-DBOOTSTRAP_DAEMON=OFF"]
+RUN ["cmake", "--build", "_build", "--target", "install"]
 
 WORKDIR /work/js-toxcore-c
 COPY . /work/js-toxcore-c/
 ENV LD_LIBRARY_PATH=/usr/local/lib
-RUN ls -l /usr/local/lib/libtoxcore.so
-RUN npm install
-RUN npm run doc
-RUN npm run test
-RUN npm run coverage
-RUN npm run format
-#COPY . /work/js-toxcore-c.orig/
-#RUN diff -ru /work/js-toxcore-c /work/js-toxcore-c.orig
+RUN ["ls", "-lh", "/usr/local/lib/libtoxcore.so.2"]
+RUN ["npm", "install"]
+RUN ["npm", "run", "doc"]
+RUN ["npm", "run", "test"]
+RUN ["npm", "run", "coverage"]
+RUN ["npm", "run", "format"]
+COPY . /work/js-toxcore-c.orig/
+RUN rm -rf \
+ /work/js-toxcore-c*/.nyc_output \
+ /work/js-toxcore-c*/doc \
+ /work/js-toxcore-c*/node_modules \
+ /work/js-toxcore-c*/coverage.lcov \
+ /work/js-toxcore-c*/package-lock.json
+RUN diff -ru /work/js-toxcore-c /work/js-toxcore-c.orig
diff --git a/package-lock.json b/package-lock.json
index b259b62..07b4e49 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "js-toxcore-c",
-  "version": "0.2.0",
+  "version": "0.2.18",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index d2ac524..81fd40b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "js-toxcore-c",
-  "version": "0.2.0",
+  "version": "0.2.18",
   "description": "Node bindings for libtoxcore",
   "keywords": [
     "im",