fix (alpine): switch base image to fix docker build

alpine-latest/Dockerfile

@@ -0,0 +1,64 @@
+FROM eclipse-temurin:11-jdk-alpine
+
+# see https://github.com/docker-library/openjdk/issues/73
+ENV LC_CTYPE en_US.UTF-8
+
+RUN addgroup -S dtcgroup && adduser -S dtcuser -G dtcgroup
+
+RUN apk update && apk upgrade && apk add --no-cache build-base
+
+RUN	echo "add needed tools" && \
+    apk add --no-cache curl wget zip unzip git bash --virtual build-dependencies build-base\
+    git \
+    graphviz \
+    python3 \
+    ruby-dev \
+    py-pygments \
+    yaml-dev \
+    ttf-dejavu
+RUN gem update --system
+RUN gem install rdoc --no-document
+RUN gem install pygments.rb
+
+# Add pandoc
+# https://github.com/advancedtelematic/dockerfiles/blob/master/doctools/Dockerfile
+#RUN apk add --no-cache cmark --repository http://nl.alpinelinux.org/alpine/edge/testing && \
+#    apk add --no-cache --allow-untrusted pandoc --repository https://conoria.gitlab.io/alpine-pandoc/
+
+SHELL ["/bin/bash", "-c"]
+
+USER dtcuser
+WORKDIR /home/dtcuser
+ENV HOME=/home/dtcuser
+
+ENV GRADLE_USER_HOME=/home/dtcuser/.gradle
+
+ARG DTC_VERSION
+RUN     git clone --branch ng https://github.com/docToolchain/docToolchain.git  && \
+        cd docToolchain && \
+        git fetch --tags && \
+        git checkout ${DTC_VERSION} && \
+        git submodule update -i && \
+        # remove .git folders
+        rm -rf `find -type d -name .git` && \
+        umask g+w && \
+        ./gradlew downloadDependencies && \
+        chmod -R o=u $GRADLE_USER_HOME && \
+        chmod -R g=u $GRADLE_USER_HOME && \
+        rm -r $GRADLE_USER_HOME/daemon && \
+        chmod -R o=u $HOME
+
+# add reveal.js
+RUN     cd /home/dtcuser/docToolchain/resources/. && \
+        ./clone.sh && \
+        cd -
+
+ENV PATH="/home/dtcuser/docToolchain/bin:${PATH}"
+
+USER dtcuser
+
+WORKDIR /project
+
+VOLUME /project
+
+ENTRYPOINT /bin/bash

alpine/Dockerfile

@@ -1,4 +1,4 @@
-FROM openjdk:14-jdk-alpine
+FROM eclipse-temurin:11-jdk-alpine
 
 # see https://github.com/docker-library/openjdk/issues/73
 ENV LC_CTYPE en_US.UTF-8
@@ -11,13 +11,13 @@ RUN	echo "add needed tools" && \
     apk add --no-cache curl wget zip unzip git bash --virtual build-dependencies build-base\
     git \
     graphviz \
-    python \
+    python3 \
     ruby-dev \
     py-pygments \
-    libc6-compat \
-    ttf-dejavu 
-RUN gem update --system  --no-rdoc --no-ri
-RUN gem install rdoc --no-document 
+    yaml-dev \
+    ttf-dejavu
+RUN gem update --system
+RUN gem install rdoc --no-document
 RUN gem install pygments.rb
 
 # Add pandoc
@@ -49,9 +49,9 @@ RUN     git clone --branch ng https://github.com/docToolchain/docToolchain.git
         chmod -R o=u $HOME
 
 # add reveal.js
-RUN     cd /home/dtcuser/docToolchain/resources/. && \ 
+RUN     cd /home/dtcuser/docToolchain/resources/. && \
         ./clone.sh && \
-        cd - 
+        cd -
 
 ENV PATH="/home/dtcuser/docToolchain/bin:${PATH}"
 
@@ -61,4 +61,4 @@ WORKDIR /project
 
 VOLUME /project
 
-ENTRYPOINT /bin/bash
+ENTRYPOINT /bin/bash