Update Node.js Dockerfile to install Yarn differently

The Yarn GPG key (6A010C5166006599AA17F08146C2130DFD2497F5) can no longer be fetched from keyservers, it returns "no user ID". So the signature verification fails. So let's just download yarn via npm and simplify this.

Author: tomassrnka

templates/base/e2b.Dockerfile

@@ -10,7 +10,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y \
 RUN groupadd --gid 1000 node \
   && useradd --uid 1000 --gid node --shell /bin/bash --create-home node
 
-ENV NODE_VERSION 20.9.0
+ENV NODE_VERSION=20.9.0
 
 RUN ARCH= && dpkgArch="$(dpkg --print-architecture)" \
   && case "${dpkgArch##*-}" in \
@@ -55,26 +55,5 @@ RUN ARCH= && dpkgArch="$(dpkg --print-architecture)" \
   && node --version \
   && npm --version
 
-ENV YARN_VERSION 1.22.19
-
-RUN set -ex \
-  # use pre-existing gpg directory, see https://github.com/nodejs/docker-node/pull/1895#issuecomment-1550389150
-  && export GNUPGHOME="$(mktemp -d)" \
-  && for key in \
-    6A010C5166006599AA17F08146C2130DFD2497F5 \
-  ; do \
-    gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$key" || \
-    gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key" ; \
-  done \
-  && curl -fsSLO --compressed "https://yarnpkg.com/downloads/$YARN_VERSION/yarn-v$YARN_VERSION.tar.gz" \
-  && curl -fsSLO --compressed "https://yarnpkg.com/downloads/$YARN_VERSION/yarn-v$YARN_VERSION.tar.gz.asc" \
-  && gpg --batch --verify yarn-v$YARN_VERSION.tar.gz.asc yarn-v$YARN_VERSION.tar.gz \
-  && gpgconf --kill all \
-  && rm -rf "$GNUPGHOME" \
-  && mkdir -p /opt \
-  && tar -xzf yarn-v$YARN_VERSION.tar.gz -C /opt/ \
-  && ln -s /opt/yarn-v$YARN_VERSION/bin/yarn /usr/local/bin/yarn \
-  && ln -s /opt/yarn-v$YARN_VERSION/bin/yarnpkg /usr/local/bin/yarnpkg \
-  && rm yarn-v$YARN_VERSION.tar.gz.asc yarn-v$YARN_VERSION.tar.gz \
-  # smoke test
+RUN npm install -g yarn@1.22.19 \
   && yarn --version