Optimize Dockerfile (#1700)

Dockerfile

@@ -2,24 +2,24 @@ FROM bitnami/minideb:latest
 
 Label MAINTAINER Amir Pourmand
 
-RUN apt-get update -y
+RUN apt-get update -y && apt-get install -y --no-install-recommends \
+    locales \ 
+    imagemagick \
+    ruby-full \
+    build-essential \
+    zlib1g-dev \
+    python3-pip && rm -rf /var/lib/apt/lists/*
+
 
-# add locale
-RUN apt-get -y install locales
-# Set the locale
 RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && \
     locale-gen
-ENV LANG en_US.UTF-8
-ENV LANGUAGE en_US:en
-ENV LC_ALL en_US.UTF-8
 
-# add ruby and jekyll
-RUN apt-get install --no-install-recommends ruby-full build-essential zlib1g-dev -y
-RUN apt-get install imagemagick -y
+ENV LANG=en_US.UTF-8 \
+    LANGUAGE=en_US:en \
+    LC_ALL=en_US.UTF-8 \
+    JEKYLL_ENV=production 
 
-# install python3 and jupyter
-RUN apt-get install python3-pip -y
-RUN python3 -m pip install jupyter --break-system-packages
+RUN python3 -m pip install jupyter --break-system-packages --no-cache-dir
 
 # install jekyll and dependencies
 RUN gem install jekyll bundler
@@ -30,11 +30,8 @@ ADD Gemfile /srv/jekyll
 
 WORKDIR /srv/jekyll
 
-RUN bundle install
-
-# Set Jekyll environment
-ENV JEKYLL_ENV=production 
-
+RUN bundle install --no-cache 
+# && rm -rf /var/lib/gems/3.1.0/cache
 EXPOSE 8080
 
 CMD ["/bin/bash", "-c", "rm -f Gemfile.lock && exec jekyll serve --watch --port=8080 --host=0.0.0.0 --livereload --verbose --trace"]