diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 8580c23d..7bc6b3f5 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -23,9 +23,20 @@ RUN apt-get update && apt-get install -y \
     python3-pip \
     python3-venv \
     python3-dev \
+    apt-transport-https \
  && apt-get clean \
- && rm -rf /var/lib/apt/lists/* \
- && NODE_VERSION=v22.14.0 \
+ && rm -rf /var/lib/apt/lists/*
+
+# Install Doppler CLI
+# https://docs.doppler.com/docs/install-cli
+RUN curl -sLf --retry 3 --tlsv1.2 --proto "=https" 'https://packages.doppler.com/public/cli/gpg.DE2A7741A397C129.key' | gpg --dearmor -o /usr/share/keyrings/doppler-archive-keyring.gpg \
+ && echo "deb [signed-by=/usr/share/keyrings/doppler-archive-keyring.gpg] https://packages.doppler.com/public/cli/deb/debian any-version main" | tee /etc/apt/sources.list.d/doppler-cli.list \
+ && apt-get update && apt-get install -y doppler \
+ && apt-get clean \
+ && rm -rf /var/lib/apt/lists/*
+
+# Install Node.js
+RUN NODE_VERSION=v22.14.0 \
  && NODE_ARCH=$(dpkg --print-architecture | sed 's/amd64/x64/;s/armhf/armv7l/;s/arm64/arm64/') \
  && wget -q https://nodejs.org/dist/${NODE_VERSION}/node-${NODE_VERSION}-linux-${NODE_ARCH}.tar.xz \
  && tar -xJf node-${NODE_VERSION}-linux-${NODE_ARCH}.tar.xz -C /usr/local --strip-components=1 \