Update to Base image (elixir:1.15.6-otp26.1.1-rust1.72.0), Node.js (18.18.0), and Phoenix (1.7.7)

Author: supercodepoet

Dockerfile

@@ -33,7 +33,7 @@ RUN npm install -g npm@$NPM_VERSION
 # install Hex
 RUN mix local.hex --force
 
-ENV PHOENIX_VERSION 1.7.8
+ENV PHOENIX_VERSION 1.7.7
 
 # install the Phoenix Mix archive
 RUN mix archive.install --force hex phx_new $PHOENIX_VERSION