diff --git a/Dockerfile b/Dockerfile
index 723dbbc2b..6396db766 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -58,8 +58,8 @@ RUN DEBIAN_FRONTEND=noninteractive \
       && apt clean \
       && rm -rf /var/lib/apt/lists/*
 
-# Latest NPM (taken from  https://deb.nodesource.com/setup_8.x )
-RUN curl -sSL https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -
+# Note: Node.js 14 is installed directly from nodejs.org binaries below (not via apt)
+# because NodeSource deprecated the Node 14 repository after EOL (April 2023)
 RUN curl -sSL https://dl.google.com/linux/linux_signing_key.pub | apt-key add -
 RUN curl -sSL https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -
 RUN curl -sSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
@@ -71,8 +71,7 @@ RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg ma
 
 RUN echo "deb https://nginx.org/packages/ubuntu/ jammy nginx" > /etc/apt/sources.list.d/nginx.list
 
-RUN echo "deb https://deb.nodesource.com/node_14.x jammy main" > /etc/apt/sources.list.d/nodesource.list
-RUN echo "deb-src https://deb.nodesource.com/node_14.x jammy main" >> /etc/apt/sources.list.d/nodesource.list
+# NodeSource repo removed - Node 14 installed from official binaries below
 
 RUN echo "deb http://packages.cloud.google.com/apt cloud-sdk main" > /etc/apt/sources.list.d/google-cloud-sdk.list
 RUN echo "deb [arch=${TARGETARCH}] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" > /etc/apt/sources.list.d/docker.list
@@ -110,7 +109,6 @@ RUN DEBIAN_FRONTEND=noninteractive \
       postgresql-client-13 \
       postgresql-contrib-13 \
       git-restore-mtime \
-      nodejs \
       libgbm1 \
       google-cloud-sdk \
       google-cloud-sdk-pubsub-emulator \
@@ -178,6 +176,27 @@ ENV LANGUAGE=en_US.UTF-8
 ENV LANG=en_US.UTF-8
 ENV LC_ALL=en_US.UTF-8
 
+############################
+# Node.js 14 (installed from official binaries since NodeSource deprecated Node 14)
+############################
+RUN <<EOF
+set -e
+NODE_VERSION=14.21.3
+case ${TARGETARCH} in
+  arm64) ARCH=arm64 ;;
+  amd64) ARCH=x64 ;;
+  *) exit 1;;
+esac
+curl -fsSL https://nodejs.org/dist/v${NODE_VERSION}/node-v${NODE_VERSION}-linux-${ARCH}.tar.xz -o node.tar.xz
+sudo mkdir -p /usr/local/lib/nodejs
+sudo tar -xJf node.tar.xz -C /usr/local/lib/nodejs
+sudo ln -sf /usr/local/lib/nodejs/node-v${NODE_VERSION}-linux-${ARCH}/bin/node /usr/bin/node
+sudo ln -sf /usr/local/lib/nodejs/node-v${NODE_VERSION}-linux-${ARCH}/bin/npm /usr/bin/npm
+sudo ln -sf /usr/local/lib/nodejs/node-v${NODE_VERSION}-linux-${ARCH}/bin/npx /usr/bin/npx
+rm node.tar.xz
+node --version
+EOF
+
 ############################
 # Frontend
 ############################