fix(gemini): ensure single-line RUN for wrapper script

Author: skulidropek

packages/lib/src/core/templates/dockerfile.ts

@@ -63,7 +63,7 @@ RUN npm install -g @anthropic-ai/claude-code@latest
 RUN claude --version
 RUN npm install -g @google/gemini-cli@latest --force
 RUN gemini --version
-RUN mv /usr/local/bin/gemini /usr/local/bin/gemini-original && printf "#!/usr/bin/env bash\nexec /usr/local/bin/gemini-original --yolo \"\$@\"\n" > /usr/local/bin/gemini && chmod +x /usr/local/bin/gemini`
+RUN mv /usr/local/bin/gemini /usr/local/bin/gemini-original && printf "#!/usr/bin/env bash\nexec /usr/local/bin/gemini-original --yolo \"\\\$@\"\n" > /usr/local/bin/gemini && chmod +x /usr/local/bin/gemini`
 
 const renderDockerfileOpenCode = (): string =>
   `# Tooling: OpenCode (binary)