Fix Dockerfile: compile before assets.deploy

- Run mix compile before mix assets.deploy so colocated hooks are generated
- Fix Docker warnings: use AS instead of as, ENV key=value format

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

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

Dockerfile

@@ -20,7 +20,7 @@ ARG DEBIAN_VERSION=bookworm-20250610-slim
 ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
 ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"
 
-FROM ${BUILDER_IMAGE} as builder
+FROM ${BUILDER_IMAGE} AS builder
 
 # install build dependencies
 RUN apt-get update -y && apt-get install -y build-essential git \
@@ -53,12 +53,12 @@ COPY lib lib
 
 COPY assets assets
 
-# compile assets
-RUN mix assets.deploy
-
-# Compile the release
+# Compile the project first (generates colocated hooks for esbuild)
 RUN mix compile
 
+# compile assets (must happen after mix compile for colocated hooks)
+RUN mix assets.deploy
+
 # Changes to config/runtime.exs don't require recompiling the code
 COPY config/runtime.exs config/
 
@@ -76,9 +76,9 @@ RUN apt-get update -y && \
 # Set the locale
 RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
 
-ENV LANG en_US.UTF-8
-ENV LANGUAGE en_US:en
-ENV LC_ALL en_US.UTF-8
+ENV LANG=en_US.UTF-8
+ENV LANGUAGE=en_US:en
+ENV LC_ALL=en_US.UTF-8
 
 WORKDIR "/app"
 RUN chown nobody /app