Update shlink-web-client with support for client-side generated QRs

dev.Dockerfile

@@ -1,8 +1,15 @@
 FROM mcr.microsoft.com/playwright:v1.51.1-noble
 
 ENV NODE_VERSION 22.14
+ENV TINI_VERSION v0.19.0
 
 # Install Node.js
 RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.2/install.sh | bash && \
     \. "$HOME/.nvm/nvm.sh" && \
     nvm install ${NODE_VERSION}
+
+# Install tini
+ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /sbin/tini
+RUN chmod +x /sbin/tini
+# Set tini as the entry point, as node does not properly handle signals
+ENTRYPOINT ["/sbin/tini", "--"]