Install Node.js in Docker to build vendor assets

- Add Node.js installation to Dockerfile
- Run npm install to get dependencies
- Build vendor bundle during Docker build
- Remove unnecessary assets.deploy.prod alias

This ensures all JavaScript dependencies are available during the build process.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -50,12 +50,20 @@ COPY priv/gleam priv/gleam
 # Compile Gleam files (using pre-compiled BEAM files)
 RUN mix gleam_compile
 
-# Copy pre-bundled vendor assets
-COPY priv/static/assets/vendor.js priv/static/assets/
-COPY priv/static/assets/vendor.css priv/static/assets/
+# Install Node.js for asset building
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
+    apt-get install -y nodejs && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
 
-# Compile assets (using prod alias that skips vendor bundling)
-RUN mix assets.deploy.prod
+# Install npm dependencies
+WORKDIR /app/assets
+RUN npm install
+
+# Go back to app root
+WORKDIR /app
+
+# Compile assets
+RUN mix assets.deploy
 
 # Compile and release
 RUN mix release --path /app/release

mix.exs

@@ -138,11 +138,6 @@ defmodule Aprsme.MixProject do
         "esbuild vendor",
         "esbuild default --minify",
         "phx.digest"
-      ],
-      "assets.deploy.prod": [
-        "tailwind default --minify",
-        "esbuild default --minify",
-        "phx.digest"
       ]
     ]
   end