优化Dockerfile，不通过代理也能构建成功

jcloud/docker/Dockerfile

@@ -154,32 +154,25 @@ RUN  --mount=type=cache,target=/var/cache/apt {{ p.after_install }} \
 
 
 # symlink mysqldump to mariadb-dump
-RUN ln -s /usr/bin/mysqldump /usr/bin/mariadb-dump
+RUN test -f /usr/bin/mariadb-dump || ln -s /usr/bin/mysqldump /usr/bin/mariadb-dump
 
-# Switch to jingrow
-USER jingrow
 WORKDIR /home/jingrow
 
-
+# Install Node using NodeSource (as root to avoid GitHub access via nvm)
-# Install Node using NVM
-ENV NVM_DIR /home/jingrow/.nvm
-ENV {{ pg.get_dependency_version("nvm", True) }}
 ENV {{ pg.get_dependency_version("node", True) }}
-
+USER root
-RUN wget https://raw.githubusercontent.com/nvm-sh/nvm/v${NVM_VERSION}/install.sh \
+RUN NODE_MAJOR=$(echo ${NODE_VERSION} | cut -d. -f1) \
-  && bash install.sh \
+  && curl -fsSL https://deb.nodesource.com/setup_${NODE_MAJOR}.x | bash - \
-  && . "/home/jingrow/.nvm/nvm.sh" \
+  && apt-get update \
-  && nvm install ${NODE_VERSION} \
+  && apt-get install --yes --no-install-suggests --no-install-recommends nodejs \
-  && nvm use v${NODE_VERSION} \
+  && rm -rf /var/lib/apt/lists/* \
-  && nvm alias default v${NODE_VERSION} \
-  && rm install.sh \
-  && nvm cache clear \
   `#stage-pre-node`
 
-ENV PATH "$PATH:/home/jingrow/.nvm/versions/node/v${NODE_VERSION}/bin"
+# Install Yarn globally
+RUN npm install -g yarn `#stage-pre-yarn`
 
-# Install Yarn
+# Switch back to jingrow
-RUN --mount=type=cache,target=/home/jingrow/.cache,uid=1000,gid=1000 npm install -g yarn `#stage-pre-yarn`
+USER jingrow
 
 
 # Install Bench