chore(devcontainer): use coatldev/six:jython-3.12 as base image

Dockerfile

@@ -1,50 +1,9 @@
-# hadolint global ignore=DL3008,DL3042
-FROM coatldev/six:3.12 as base
-
-ENV JYTHON_VERSION 2.7.3
-ENV JYTHON_HOME /opt/jython/${JYTHON_VERSION}
-
-RUN set -eux; \
-    \
-    apt-get update --quiet; \
-    apt-get install --yes --no-install-recommends \
-        openjdk-17-jre \
-    ; \
-    rm -rf /var/lib/apt/lists/*
-
-# >============================================================================<
-
-FROM base as jython
-
-RUN set -eux; \
-    \
-    apt-get update --quiet; \
-    apt-get install --yes --no-install-recommends \
-        wget \
-    ; \
-    rm -rf /var/lib/apt/lists/*
-
-WORKDIR /tmp
-
-RUN set -eux; \
-    \
-    wget -q "https://repo1.maven.org/maven2/org/python/jython-installer/${JYTHON_VERSION}/jython-installer-${JYTHON_VERSION}.jar"; \
-    \
-    java -jar "jython-installer-${JYTHON_VERSION}.jar" \
-        --silent \
-        --type standard \
-        --directory "$JYTHON_HOME"
-
-# >============================================================================<
-
-FROM base as final
-
-COPY --from=jython ${JYTHON_HOME}/ ${JYTHON_HOME}/
-
-ENV PATH ${JYTHON_HOME}/bin:$PATH
+FROM coatldev/six:jython-3.12 as devcontainer
 
 COPY requirements /tmp/requirements/
 
+# pip caching disabled by base image
+# hadolint ignore=DL3042
 RUN set -eux; \
     \
     python2 -m pip install --requirement \