Build watchexec in a docker image used for the feature spec

bin/test/watchexec-ruby-app

@@ -5,4 +5,3 @@ bundle exec rake build
 # cp -R features/support features/watchexec-ruby-app/retest
 ls -t pkg | head -n1 | xargs -I {} mv pkg/{} features/watchexec-ruby-app/retest.gem
 docker compose -f features/watchexec-ruby-app/docker-compose.yml up --build --exit-code-from retest
-# docker compose -f features/watchexec-ruby-app/docker-compose.yml up --exit-code-from retest

builds/dockerfiles/WatchexecSlimBullseye

@@ -0,0 +1,12 @@
+# Stage 1: Build watchexec with Rust
+FROM rust:1.83.0-slim-bullseye AS rust-builder
+
+# Install necessary dependencies for Rust
+RUN apt-get update -qq && \
+    apt-get install --no-install-recommends -y build-essential git
+
+# Install watchexec
+RUN cargo install watchexec-cli
+
+# Verify installation
+RUN watchexec --version

features/watchexec-ruby-app/Dockerfile

@@ -1,17 +1,3 @@
-# Stage 1: Build watchexec with Rust
-FROM rust:1.83.0-slim-bullseye AS rust-builder
-
-# Install necessary dependencies for Rust
-RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential git
-
-# Install watchexec
-RUN cargo install watchexec-cli
-
-# Verify installation
-RUN watchexec --version
-
-# Stage 2: Ruby application setup
 FROM ruby:2.7-slim-bullseye
 
 # Install necessary dependencies
@@ -20,7 +6,7 @@ RUN apt-get update -qq && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
 # Copy watchexec from the Rust stage
-COPY --from=rust-builder /usr/local/cargo/bin/watchexec /usr/local/bin/watchexec
+COPY --from=ghcr.io/alexb52/slim-bullseye-watchexec:latest /usr/local/cargo/bin/watchexec /usr/local/bin/watchexec
 
 # Verify watchexec installation in the final image
 RUN watchexec --version