🏗✨：kick off new fish shell CentOS devcontainer

.devcontainer/Dockerfile

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+# Ethically sourced from official fish-shell/fish-shell project:
+# See: https://github.com/fish-shell/fish-shell/blob/HEAD/Dockerfile
+
+FROM centos:centos7
+
+# Build dependency
+RUN yum update -y \
+  && yum install -y epel-release \
+  && yum install -y clang cmake3 gcc-c++ make ncurses-devel \
+  && yum clean all
+
+# Test dependency
+RUN yum install -y expect vim-common \
+  && yum clean all
+
+# ADD . /src
+# WORKDIR /src
+
+# Build fish
+# RUN cmake3 . &&\
+#   make &&\
+#   make install
+

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/openinf/docker-fisher/tree/main/templates/centos7
+{
+	"name": "CentOS",
+
+    "build": {
+        // Path is relative to the devcontainer.json file.
+        "dockerfile": "Dockerfile"
+    },
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {
+		// "ghcr.io/devcontainers/features/docker-in-docker:2": {}
+	// },
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"mads-hartmann.bash-ide-vscode",
+				"bmalehorn.vscode-fish",
+				"timonwong.shellcheck",
+				"streetsidesoftware.code-spell-checker",
+				"ms-azuretools.vscode-docker"
+			]
+		}
+	},
+
+	// "remoteUser": "node",
+
+	// "postCreateCommand": "npm install -g @devcontainers/cli && sudo apt-get update -y && sudo apt-get upgrade -y && sudo apt-get install -y shellcheck",
+
+	"hostRequirements": {
+		"cpus": 4
+	}
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.devcontainer/docker-compose.yml

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+version: '3'
+
+services:
+  app:
+    build: 
+      context: .
+      dockerfile: Dockerfile
+
+    volumes:
+      # Forwards the local Docker socket to the container.
+      - /var/run/docker.sock:/var/run/docker-host.sock 
+      # Update this to wherever you want VS Code to mount the folder of your project
+      - ../..:/workspaces:cached
+
+    # Overrides default command so things don't shut down after the process ends.
+    entrypoint: /usr/local/share/docker-init.sh
+    command: sleep infinity 
+
+    # Uncomment the next four lines if you will use a ptrace-based debuggers like C++, Go, and Rust.
+    # cap_add:
+    #  - SYS_PTRACE
+    # security_opt:
+    #   - seccomp:unconfined
+
+    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally. 
+    # (Adding the "ports" property to this file will not forward from a Codespace.)

.github/dependabot.yml

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+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for more information:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+# https://containers.dev/guide/dependabot
+
+version: 2
+updates:
+ - package-ecosystem: "devcontainers"
+   directory: "/"
+   schedule:
+     interval: weekly