make ci reusable

.github/workflows/backend-dev-ci.yml

@@ -0,0 +1,33 @@
+# Backend CI Workflow
+# This workflow builds and pushes a Docker image for the backend service to GitHub Container Registry.
+# It runs on workflow dispatch or when called by another workflow.
+
+name: Backend-CI
+
+on:
+  workflow_dispatch: # Allows manual triggering of the workflow, temporary exist for testing
+  workflow_call:
+
+
+
+# Configures this workflow to run every time a change is pushed to the branch called `release`.
+
+# Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository_owner }}/pastexam/backend
+
+# There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
+jobs:
+  dev-build-and-push-image:
+    runs-on: ubuntu-latest
+    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
+    steps:
+      - name: run dev r-ci
+        uses: ./.github/workflows/r-ci.yml
+        with:
+          isDev: true
+          imageName: ${{ env.IMAGE_NAME }}
+          REGISTRY: ${{ env.REGISTRY }}
+
+

.github/workflows/r-ci.yml

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+name: Reusable-CI
+
+on:
+  workflow_call:
+    inputs:
+        imageName:
+          description: 'The name of the image to use'
+          type: string
+          default: 'pastexam'
+        REGISTRY:
+          description: 'The registry to use'
+          type: string
+          default: 'ghcr.io'
+        isDev:
+          description: 'Whether this is called by a dev workflow'
+          type: boolean
+          default: false
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ inputs.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a subsequent step. The `images` value provides the base name for the tags and labels.
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ inputs.REGISTRY }}/${{ inputs.imageName }}
+      # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If the build succeeds, it pushes the image to GitHub Packages.
+      # It uses the `context` parameter to define the build's context as the set of files located in the specified path. For more information, see "[Usage](https://github.com/docker/build-push-action#usage)" in the README of the `docker/build-push-action` repository.
+      # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: ./backend
+          push: true
+          platforms: linux/amd64
+          tags:  >
+            ${{ steps.meta.outputs.tags }},
+            ${{ inputs.REGISTRY }}/${{ inputs.imageName }}:${{ inputs.isDev && 'dev-latest' || 'latest' }} #will need to change to 
+          labels: ${{ steps.meta.outputs.labels }}
+
+