Add Dev Container Configuration Files (#7)

.devcontainer/Julia.Dockerfile

@@ -0,0 +1,68 @@
+ARG BUILD_ON_IMAGE=glcr.b-data.ch/julia/base
+ARG JULIA_VERSION=latest
+
+FROM ${BUILD_ON_IMAGE}:${JULIA_VERSION} as files
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
+RUN mkdir /files
+
+COPY julia-base/conf/user /files
+COPY julia-base/scripts /files
+
+## Ensure file modes are correct when using CI
+## Otherwise set to 777 in the target image
+RUN find /files -type d -exec chmod 755 {} \; \
+  && find /files -type f -exec chmod 644 {} \; \
+  && find /files/usr/local/bin -type f -exec chmod 755 {} \;
+
+FROM ${BUILD_ON_IMAGE}:${JULIA_VERSION}
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+## Update environment
+ARG USE_ZSH_FOR_ROOT
+ARG SET_LANG
+ARG SET_TZ
+
+ENV LANG=${SET_LANG:-$LANG} \
+    TZ=${SET_TZ:-$TZ} \
+    PARENT_IMAGE_BUILD_DATE=${BUILD_DATE}
+
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
+  ## Change root's shell to ZSH
+RUN if [ ! -z "$USE_ZSH_FOR_ROOT" ]; then \
+    chsh -s /bin/zsh; \
+  fi \
+  ## Update timezone if needed
+  && if [ "$TZ" != "Etc/UTC" ]; then \
+    echo "Setting TZ to $TZ"; \
+    ln -snf /usr/share/zoneinfo/$TZ /etc/localtime \
+      && echo $TZ > /etc/timezone; \
+  fi \
+  ## Add/Update locale if needed
+  && if [ "$LANG" != "en_US.UTF-8" ]; then \
+    sed -i "s/# $LANG/$LANG/g" /etc/locale.gen; \
+    locale-gen; \
+    echo "Setting LANG to $LANG"; \
+    update-locale --reset LANG=$LANG; \
+  fi \
+  ## Allow updating pre-installed Julia packages
+  ## Make sure $JULIA_PATH/local/share/julia/registries/* is deleted
+  && rm -rf ${JULIA_PATH}/local/share/julia/registries/*
+
+## Pip: Install to the Python user install directory (1) or not (0)
+ARG PIP_USER=1
+
+ENV PIP_USER=${PIP_USER}
+
+## Copy files as late as possible to avoid cache busting
+COPY --from=files /files /
+
+## Reset environment variable BUILD_DATE
+ARG BUILD_START
+
+ENV BUILD_DATE=${BUILD_START}