Adjust devcontainer (#16409)

.devcontainer/devcontainer.json

@@ -4,6 +4,7 @@
   "dockerFile": "../Dockerfile",
   "appPort": [4000],
   "postCreateCommand": "bundle install && npm install",
+  "containerEnv": {"DEVCONTAINER": "true"},
   "extensions": [
     "davidanson.vscode-markdownlint",
     "editorconfig.editorconfig",
@@ -18,6 +19,6 @@
     "errorLens.gutterIconsEnabled": true,
     "errorLens.addAnnotationTextPrefixes": false,
     "errorLens.enabledDiagnosticLevels": ["error", "warning"],
-    "terminal.integrated.shell.linux": "/bin/bash"
+    "terminal.integrated.shell.linux": "/usr/bin/zsh",
   }
 }

Dockerfile

@@ -7,28 +7,22 @@ RUN \
   su vscode -c \
     "source /usr/local/share/nvm/nvm.sh && nvm install $(cat /tmp/.nvmrc) 2>&1"
 
-# Set an environment variable to be able to detect we are in dev container
-ENV DEVCONTAINER=true
-
 # Locale env vars
 ENV \
     LANG=en_US.UTF-8 \
     LANGUAGE=en_US:en \
     LC_ALL=en_US.UTF-8
 
-# Install git, process tools
-RUN apt update && export DEBIAN_FRONTEND=noninteractive \
-    && apt-get install -y --no-install-recommends \
-        ack \
-        git \
-        locales \
-        procps \
-    && echo "en_US UTF-8" > /etc/locale.gen \
-    && locale-gen en_US.UTF-8 \
-    && echo 'export PS1="\\w\$ "' > /root/.bashrc \
-    && apt-get autoremove -y \
-    && apt-get clean -y \
-    && rm -rf /var/lib/apt/lists/*
+# Install tools
+RUN \
+  apt update \
+  && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+      ack \
+  && echo "en_US UTF-8" > /etc/locale.gen \
+  && locale-gen en_US.UTF-8 \
+  && apt-get autoremove -y \
+  && apt-get clean -y \
+  && rm -rf /var/lib/apt/lists/*
 
 # Install the specific version of bundler we need
 COPY Gemfile.lock ./

Gemfile

@@ -8,6 +8,8 @@ group :development do
   gem 'compass', '1.0.3'
   gem 'sass-globbing', '1.1.5'
   gem 'stringex', '2.8.5'
+  # > 2.1.0 causes slowdowns https://github.com/sass/sassc-ruby/issues/189
+  gem 'sassc', '2.1.0'
 end
 
 group :jekyll_plugins do

Gemfile.lock

@@ -99,9 +99,9 @@ GEM
     sass (3.4.25)
     sass-globbing (1.1.5)
       sass (>= 3.1)
-    sassc (2.4.0)
+    sassc (2.1.0)
       ffi (~> 1.9)
-    sassc (2.4.0-x64-mingw32)
+    sassc (2.1.0-x64-mingw32)
       ffi (~> 1.9)
     sinatra (2.1.0)
       mustermann (~> 1.0)
@@ -133,6 +133,7 @@ DEPENDENCIES
   nokogiri (= 1.11.1)
   rake (= 13.0.3)
   sass-globbing (= 1.1.5)
+  sassc (= 2.1.0)
   sinatra (= 2.1.0)
   stringex (= 2.8.5)
   tzinfo (~> 2.0)