Runtime-stage fixes

Dockerfile

@@ -4,6 +4,11 @@ ARG DEBIAN_VERSION=trixie-20260202-slim
 
 FROM "docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
 
+# Set the locale
+ENV LANG=en_US.UTF-8
+ENV LANGUAGE=en_US:en
+ENV LC_ALL=en_US.UTF-8
+
 # Install dependencies
 RUN apt-get update \
     && apt-get install -y --no-install-recommends build-essential make gcc erlang-dev git autoconf automake libtool pkg-config \
@@ -14,6 +19,7 @@ WORKDIR /app
 COPY . .
 
 # Compile the application
+ENV MIX_HOME=/app/.mix
 RUN mix local.hex --force && mix local.rebar --force
 RUN mix deps.get --only prod
 RUN MIX_ENV=prod mix compile
@@ -21,11 +27,6 @@ RUN MIX_ENV=prod mix compile
 # Update the static Swagger documentation
 RUN MIX_ENV=prod mix phx.swagger.generate
 
-# Set the locale
-ENV LANG=en_US.UTF-8
-ENV LANGUAGE=en_US:en
-ENV LC_ALL=en_US.UTF-8
-
 # Run as the isidore-dev user
 USER 1008