Ensure PR labels and provide PR template (#288)

* chore: add pull request template

* chore: ensure pull request has label

* chore: add list of labels

* chore: enable git completion in bash terminal

* feat: use minimal set of labels

.devcontainer/Dockerfile

@@ -11,4 +11,6 @@ RUN if [ "${NODE_VERSION}" != "none" ]; then su vscode -c "umask 0002 && . /usr/
 #     && apt-get -y install --no-install-recommends <your-package-list-here>
 
 # [Optional] Uncomment this line to install global node packages.
-# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1
+# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1
+
+RUN echo '\nsource /usr/share/bash-completion/completions/git' >> /home/vscode/.bashrc

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,7 @@
+# Readiness checklist
+
+- [ ] I ensured that the PR title is good enough.
+- [ ] I labeled the PR.
+- [ ] I self-reviewed the PR.
+
+<!-- # Description -->

.github/settings.yml

@@ -0,0 +1,33 @@
+---
+# https://github.com/repository-settings/app
+
+repository:
+  allow_squash_merge: true
+  allow_merge_commit: false
+  allow_rebase_merge: false
+  allow_auto_merge: true
+  allow_update_branch: true
+  delete_branch_on_merge: true
+
+labels:
+  - name: bug
+    color: "#d73a4a"
+    description: Something isn't working
+  - name: chore
+    color: "#c2e0c6"
+    description: Some routine work like updating dependencies
+  - name: ci
+    color: "#DFB5FD"
+    description: Continuous Integration related stuff
+  - name: dependencies
+    color: "#0366d6"
+    description: Pull requests that update dependencies
+  - name: enhancement
+    color: "#a2eeef"
+    description: New feature or request
+  - name: refactoring
+    color: "#880361"
+    description: Refactoring of code
+  - name: wip
+    color: "#32BF4C"
+    description: Work in Progress (blocks mergify from auto update the branch)

.github/workflows/check-pr.yml

@@ -0,0 +1,17 @@
+name: Check Pull Request
+
+on:
+  pull_request:
+    types: [opened, labeled, unlabeled, synchronize]
+
+jobs:
+  validate-pr-label:
+    name: Validate the Pull Request's labels
+    runs-on: ubuntu-latest
+    steps:
+      - name: PR must be labeled
+        uses: jesusvasquez333/verify-pr-label-action@v1.4.0
+        with:
+          disable-reviews: true
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          valid-labels: "bug, chore, ci, dependencies, enhancement, refactoring"