dev: Add Devcontainer environment

Author: tokengeek

.devcontainer/Dockerfile

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+FROM mcr.microsoft.com/devcontainers/ruby:2-3.4-trixie
+
+# Install additional OS packages
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends \
+    libssl-dev \
+    libreadline-dev \
+    zlib1g-dev \
+    libncurses-dev \
+    libyaml-dev \
+    libffi-dev \
+    libgdbm-dev \
+    && apt-get clean -y && rm -rf /var/lib/apt/lists/*
+
+# Switch to vscode user
+USER vscode
+
+# Install OpenSSL 1.1.1w locally
+RUN mkdir -p /home/vscode/.openssl_src \
+    && cd /home/vscode/.openssl_src \
+    && wget -q https://www.openssl.org/source/openssl-1.1.1w.tar.gz \
+    && tar -zxf openssl-1.1.1w.tar.gz \
+    && cd openssl-1.1.1w \
+    && ./config --prefix=/home/vscode/.openssl/1.1.1w --openssldir=/home/vscode/.openssl/1.1.1w \
+    && make \
+    && make install \
+    && cd .. \
+    && rm -rf /home/vscode/.openssl_src
+
+# Link system certificates
+RUN rmdir /home/vscode/.openssl/1.1.1w/certs \
+    && ln -s /etc/ssl/certs /home/vscode/.openssl/1.1.1w/certs \
+    && ln -s /etc/ssl/certs/ca-certificates.crt /home/vscode/.openssl/1.1.1w/cert.pem
+
+# Update RVM
+USER root
+SHELL ["/bin/bash", "-lc"]
+RUN curl -sSL https://rvm.io/mpapis.asc | gpg --import - \
+    && curl -sSL https://rvm.io/pkuczynski.asc | gpg --import - \
+    && rvm get master
+
+# Install Rubies
+USER vscode
+RUN git config --global --add safe.directory /usr/local/rvm/repos/ruby
+ENV RUBY_CFLAGS="-Wno-error=implicit-function-declaration"
+RUN rvm install 2.7 --disable-binary --with-openssl-dir=/home/vscode/.openssl/1.1.1w
+RUN rvm install 3.0 --disable-binary --with-openssl-dir=/home/vscode/.openssl/1.1.1w
+RUN rvm install 3.1.6 --disable-binary
+RUN rvm install 3.2.4 --disable-binary
+RUN rvm install 3.3.1 --disable-binary

.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/devcontainers/templates/tree/main/src/ruby
+{
+  "name": "Ruby",
+  // Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+  "build": {
+    "dockerfile": "Dockerfile"
+  },
+
+  // Features to add to the dev container. More info: https://containers.dev/features.
+  "features": {
+    "ghcr.io/devcontainers-extra/features/fish-apt-get:1": {},
+    "ghcr.io/devcontainers-extra/features/neovim-apt-get:1": {},
+    "ghcr.io/devcontainers-extra/features/ripgrep:1": {},
+    "ghcr.io/schlich/devcontainer-features/jujutsu:0": {},
+    "ghcr.io/stuartleeks/dev-container-features/shell-history:0": {}
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "visualjj.visualjj"
+      ]
+    }
+  }
+
+  // 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": "ruby --version",
+
+  // Configure tool-specific properties.
+  // "customizations": {},
+
+  // Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+  // "remoteUser": "root"
+}