Merge pull request #48 from patriciomacadden/bundler-cache-feature

Add bundler cache feature

features/bundler-cache/README.md

@@ -0,0 +1,19 @@
+# Bundler cache
+
+Creates a volume for persisting the installed gems across different containers.
+
+## Example Usage
+
+```json
+"features": {
+  "ghcr.io/rails/devcontainer/features/bundler-cache:1": {}
+}
+```
+
+## Options
+
+## Customizations
+
+## OS Support
+
+`bash` is required to execute the `install.sh` script.

features/bundler-cache/devcontainer-feature.json

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+{
+  "id": "bundler-cache",
+  "version": "1.0.0",
+  "name": "Bundler cache",
+  "description": "Creates a volume for persisting the installed gems across different containers",
+  "containerEnv": {
+    "BUNDLE_PATH": "/bundle/vendor"
+  },
+  "mounts": [
+    {
+      "source": "bundler-data",
+      "target": "/bundle",
+      "type": "volume"
+    }
+  ],
+  "postCreateCommand": "/usr/local/share/bundler-data-permissions.sh"
+}

features/bundler-cache/install.sh

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+#!/bin/sh
+
+set -e
+
+USERNAME="${USERNAME:-"${_REMOTE_USER:-"automatic"}"}"
+
+POST_CREATE_COMMAND_SCRIPT_PATH="/usr/local/share/bundler-data-permissions.sh"
+
+tee "$POST_CREATE_COMMAND_SCRIPT_PATH" > /dev/null \
+<< EOF
+#!/bin/sh
+set -e
+sudo chown -R ${USERNAME} /bundle
+EOF
+
+chmod 755 "$POST_CREATE_COMMAND_SCRIPT_PATH"