vscode remote container Haskell

containers/haskell/.devcontainer/Dockerfile

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+# Use the [Choice] comment to indicate option arguments that should appear in VS Code UX
+#
+# [Choice] Haskell version: 9, 8
+ARG VARIANT=8
+FROM haskell:${VARIANT}
+
+# Use the [Option] comment to specify true/false arguments that should appear in VS Code UX
+#
+# [Option] Install zsh
+ARG INSTALL_ZSH="true"
+# [Option] Upgrade OS packages to their latest versions
+ARG UPGRADE_PACKAGES="false"
+
+# Install needed packages and setup non-root user. Use a separate RUN statement to add your own dependencies
+ARG USERNAME=vscode
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+COPY library-scripts/*.sh /tmp/library-scripts/
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && /bin/bash /tmp/library-scripts/common-debian.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" "true" "true"\
+    && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>

containers/haskell/.devcontainer/devcontainer.json

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+{
+  "name": "Haskell (Community)",
+
+  // Update the 'dockerfile' property if you aren't using the standard 'Dockerfile' filename.
+  "build": {
+          "dockerfile": "Dockerfile",
+          "args": {
+            // Update 'VARIANT' to pick a Haskell version: 9, 8
+            "VARIANT": "8"
+          }
+  },
+
+  // Set *default* container specific settings.json values on container create.
+  "settings": {},
+
+  // Add the IDs of extensions you want installed when the container is created.
+  "extensions": [
+    "haskell.haskell"
+  ],
+
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  // "forwardPorts": [],
+
+  // Use 'postCreateCommand' to run commands after the container is created.
+  // "postCreateCommand": "uname -a",
+
+
+  // Comment out connect as root instead. To add a non-root user, see: https://aka.ms/vscode-remote/containers/non-root.
+  "remoteUser": "vscode"
+}