diff --git a/Dockerfile b/Dockerfile
index b71c7d61c..d15770fb6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,12 +20,16 @@ RUN addgroup -g ${GID} akkoma \
 
 WORKDIR ${BUILD_DIR}
 
+RUN mix local.hex --force \
+  && mix local.rebar --force
+
+COPY ./mix.exs ./mix.lock ./
+
+RUN mix deps.get --only ${MIX_ENV} 
+
 COPY . .
 
 RUN mkdir -p "${BUILD_DIR}_build/" \
-  && mix local.hex --force \
-  && mix local.rebar --force \
-  && mix deps.get --only prod \
   && mix release --path "${BUILD_DIR}_build"