Make nodejs optional as per phoenix 1.6 (#1125)

Author: krainboltgreene

containers/elixir-phoenix-postgres/.devcontainer/Dockerfile

@@ -1,5 +1,5 @@
 # Update the VARIANT arg in docker-compose.yml to pick an Elixir version: 1.9, 1.10, 1.10.4
-ARG VARIANT=latest
+ARG VARIANT="1.12.3"
 FROM elixir:${VARIANT}
 
 # This Dockerfile adds a non-root user with sudo access. Update the “remoteUser” property in
@@ -15,17 +15,18 @@ ARG COMMON_SCRIPT_SOURCE="https://raw.githubusercontent.com/microsoft/vscode-dev
 ARG COMMON_SCRIPT_SHA="dev-mode"
 
 # Optional Settings for Phoenix
-ARG PHOENIX_VERSION="1.5.4"
+ARG PHOENIX_VERSION="1.6.2"
 
+# [Optional] Setup nodejs
 ARG NODE_SCRIPT_SOURCE="https://raw.githubusercontent.com/microsoft/vscode-dev-containers/main/script-library/node-debian.sh"
 ARG NODE_SCRIPT_SHA="dev-mode"
 ARG NODE_VERSION="none"
 ENV NVM_DIR=/usr/local/share/nvm
 ENV NVM_SYMLINK_CURRENT=true
 ENV PATH=${NVM_DIR}/current/bin:${PATH}
 
-# [Choice] Node.js version: none, lts/*, 16, 14, 12, 10
-ARG NODE_VERSION="lts/*"
+# [Optional, Choice] Node.js version: none, lts/*, 16, 14, 12, 10
+ARG NODE_VERSION="none"
 
 # Install needed packages and setup non-root user. Use a separate RUN statement to add your own dependencies.
 RUN apt-get update \

containers/elixir-phoenix-postgres/.devcontainer/docker-compose.yml

@@ -7,11 +7,11 @@ services:
       dockerfile: Dockerfile
       args:
         # Elixir Version: 1.9, 1.10, 1.10.4, ...
-        VARIANT: "1.11.2"
+        VARIANT: "1.12.3"
         # Phoenix Version: 1.4.17, 1.5.4, ...
-        PHOENIX_VERSION: "1.5.7"
+        PHOENIX_VERSION: "1.6.2"
         # Node Version: 10, 11, ...
-        NODE_VERSION: "10"
+        NODE_VERSION: "none"
 
     volumes:
       - ..:/workspace:cached