fix: correct paths for hexpm/elixir image structure

The hexpm images install Erlang and Elixir in /usr/local instead of /usr/lib.

Changes:
- Copy from /usr/local/lib/erlang instead of /usr/lib/erlang
- Copy all Erlang/Elixir binaries from /usr/local/bin
- Remove manual symlink creation (binaries already exist)
- Binaries are symlinks to ../lib/erlang/bin and ../lib/elixir/bin

k8s/base-image/Dockerfile

@@ -20,13 +20,19 @@ FROM docker.io/debian:${DEBIAN_VERSION}
 LABEL maintainer="towerops"
 LABEL description="Minimal Debian 13 with Erlang/OTP and Elixir runtime"
 
-# Copy Erlang and Elixir from builder
-COPY --from=builder /usr/lib/erlang /usr/lib/erlang
+# Copy Erlang and Elixir from builder (hexpm image uses /usr/local)
+COPY --from=builder /usr/local/lib/erlang /usr/local/lib/erlang
+COPY --from=builder /usr/local/lib/elixir /usr/local/lib/elixir
+
+# Copy all Erlang/Elixir binaries (they're symlinks to lib dirs)
+COPY --from=builder /usr/local/bin/erl /usr/local/bin/erl
+COPY --from=builder /usr/local/bin/erlc /usr/local/bin/erlc
+COPY --from=builder /usr/local/bin/escript /usr/local/bin/escript
+COPY --from=builder /usr/local/bin/epmd /usr/local/bin/epmd
 COPY --from=builder /usr/local/bin/elixir /usr/local/bin/elixir
 COPY --from=builder /usr/local/bin/elixirc /usr/local/bin/elixirc
 COPY --from=builder /usr/local/bin/iex /usr/local/bin/iex
 COPY --from=builder /usr/local/bin/mix /usr/local/bin/mix
-COPY --from=builder /usr/local/lib/elixir /usr/local/lib/elixir
 
 # Install only essential runtime dependencies
 # This is the absolute minimum needed for Erlang/Elixir + Phoenix apps
@@ -55,11 +61,6 @@ ENV LANG=en_US.UTF-8
 ENV LANGUAGE=en_US:en
 ENV LC_ALL=en_US.UTF-8
 
-# Create symlinks for Erlang binaries
-RUN ln -s /usr/lib/erlang/bin/erl /usr/local/bin/erl \
-    && ln -s /usr/lib/erlang/bin/erlc /usr/local/bin/erlc \
-    && ln -s /usr/lib/erlang/bin/escript /usr/local/bin/escript
-
 # Add nobody user for security (already exists in Debian)
 RUN mkdir -p /app && chown nobody:nogroup /app