Dockerfile

FROM alpine:3.18.2

ENV NODE_VERSION 20.5.0

RUN addgroup -g 1000 node \
    && adduser -u 1000 -G node -s /bin/sh -D node \
    && apk add --no-cache \
        libstdc++ \
    && apk add --no-cache --virtual .build-deps \
        curl \
    && ARCH= && alpineArch="$(apk --print-arch)" \
      && case "${alpineArch##*-}" in \
        x86_64) \
          ARCH='x64' \
          CHECKSUM=CHECKSUM_x64 \
          ;; \
        *) ;; \
      esac \
  && if [ -n "${CHECKSUM}" ]; then \
    set -eu; \
    curl -fsSLO --compressed "https://unofficial-builds.nodejs.org/download/release/v$NODE_VERSION/node-v$NODE_VERSION-linux-$ARCH-musl.tar.xz"; \
    echo "$CHECKSUM  node-v$NODE_VERSION-linux-$ARCH-musl.tar.xz" | sha256sum -c - \
      && tar -xJf "node-v$NODE_VERSION-linux-$ARCH-musl.tar.xz" -C /usr/local --strip-components=1 --no-same-owner \
      && ln -s /usr/local/bin/node /usr/local/bin/nodejs; \
  else \
    echo "Building from source" \
    # backup build
    && apk add --no-cache --virtual .build-deps-full \
        binutils-gold \
        g++ \
        gnupg \
        libgcc \
        linux-headers \
        make \
        python3 \
    # use pre-existing gpg directory, see https://github.com/nodejs/docker-node/pull/1895#issuecomment-1550389150
    && export GNUPGHOME="$(mktemp -d)" \
    && curl -fsSLO --compressed "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION.tar.xz" \
    && curl -fsSLO --compressed "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
    && gpg --batch --decrypt --output SHASUMS256.txt SHASUMS256.txt.asc \
    && gpgconf --kill all \
    && rm -rf "$GNUPGHOME" \
    && grep " node-v$NODE_VERSION.tar.xz\$" SHASUMS256.txt | sha256sum -c - \
    && tar -xf "node-v$NODE_VERSION.tar.xz" \
    && cd "node-v$NODE_VERSION" \
    && ./configure \
    && make -j$(getconf _NPROCESSORS_ONLN) V= \
    && make install \
    && apk del .build-deps-full \
    && cd .. \
    && rm -Rf "node-v$NODE_VERSION" \
    && rm "node-v$NODE_VERSION.tar.xz" SHASUMS256.txt.asc SHASUMS256.txt; \
  fi \
  && rm -f "node-v$NODE_VERSION-linux-$ARCH-musl.tar.xz" \
  && apk del .build-deps \
  # smoke tests
  && node --version \
  && npm --version
EXPOSE 80
COPY docker-entrypoint.sh /usr/local/bin/