Scala2

.github/workflows/ci.yml

@@ -313,6 +313,19 @@ jobs:
           image_name_tag: ruby:2.5.3
           username: ${{ secrets.REGISTRY_USER }}
           password: ${{ secrets.REGISTRY_PASSWORD }}
+  build_scala2_image:
+    name: Build epicbox/scala2 image
+    runs-on: [self-hosted, small]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Build
+        uses: ./.github/workflows/actions/build
+        with:
+          path: epicbox-scala/2
+          image_name_tag: scala:2.12.7
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
   build_scala3_image:
     name: Build epicbox/scala3 image
     runs-on: [self-hosted, small]

epicbox-debian/Dockerfile

@@ -3,7 +3,8 @@ FROM bitnami/minideb:bullseye
 RUN install_packages \
   curl \
   locales \
-  && sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && locale-gen
+  && sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen \
+  && locale-gen
 
 ENV LANG en_US.UTF-8
 

epicbox-scala/2/Dockerfile

@@ -0,0 +1,15 @@
+FROM openjdk:8u342-slim
+
+ENV SCALA_VERSION 2.13.12
+ENV PATH /opt/scala-$SCALA_VERSION/bin:$PATH
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends wget && \
+    rm -rf /var/lib/apt/lists/* && \
+    touch /usr/local/openjdk-8/release && \
+    wget -O - https://downloads.lightbend.com/scala/$SCALA_VERSION/scala-$SCALA_VERSION.tgz | tar xfz - -C /opt
+
+COPY java_lookup_main.sh /usr/local/bin/java_lookup_main.sh
+RUN chmod +x /usr/local/bin/java_lookup_main.sh
+
+RUN useradd -M -d /sandbox sandbox

epicbox-scala/2/java_lookup_main.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+# Grep *.class files in the given directory to find one with psvm method defined
+# Usage: java_lookup_main.sh DIRECTORY_PATH
+
+PSVM_REGEX="public static( final)? void main\(java\.lang\.String(\[\]|\.\.\.)\)"
+
+shopt -s nullglob
+for f in "$1"/*.class; do
+    if javap -p "$f" 2> /dev/null | grep -Pq "$PSVM_REGEX"; then
+        filename=$(basename "$f")
+        echo -n "${filename%.*}"
+        exit 0
+    fi
+done
+exit 1