try a different approach

Dockerfile

@@ -2,7 +2,7 @@
 # platform specific, it makes sense to build it in the docker
 
 #### Builder
-FROM hexpm/elixir:1.17.1-erlang-27.0-alpine-3.20.1 AS buildcontainer
+FROM hexpm/elixir:1.17.1-erlang-27.0-alpine-3.21.0 AS buildcontainer
 
 ARG MIX_ENV=ce
 
@@ -20,7 +20,8 @@ RUN mkdir /app
 WORKDIR /app
 
 # install build dependencies
-RUN apk add --no-cache git nodejs yarn python3 npm ca-certificates wget gnupg make gcc libc-dev brotli
+RUN apk add --no-cache git nodejs yarn python3 npm ca-certificates wget gnupg make gcc libc-dev brotli && \
+  npm install npm@latest -g
 
 COPY mix.exs ./
 COPY mix.lock ./