[CONFIG] Github Actions

Author: sir-gon

.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 all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Maintain dependencies for npm
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Maintain dependencies for Docker
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/docker-image.yml

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+name: Docker Image CI
+
+on:
+  push:
+    branches: [ "main", "develop", "feature/*" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+    name: "Build & Test in Docker"
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build the Docker image
+      run: make compose/rebuild
+    - name: Run test in Docker image
+      run: make compose/run
+    - name: Tag Docker image
+      run: docker tag projecteuler-java:latest projecteuler-java:${{ github.sha }}
+