Add CI workflows for dual-image channel pattern

- Non-prod workflow: builds on push to main, pushes to acme-nonprod registry, creates Octopus release in Non-Prod channel
- Prod workflow: builds on v* tags, pushes to acme-prod registry, creates Octopus release in Prod channel
- Simple Alpine Dockerfile for demo purposes

.gitea/workflows/build-nonprod.yml

@@ -0,0 +1,62 @@
+name: Build Non-Prod Image
+
+on:
+  push:
+    branches: [main]
+
+env:
+  REGISTRY: gitea.oreillyit.nz
+  IMAGE: acme-nonprod/demo-app
+  OCTOPUS_SERVER: https://taniwha.octopus.app
+  OCTOPUS_SPACE_ID: Spaces-102
+  OCTOPUS_PROJECT_ID: Projects-101
+  OCTOPUS_CHANNEL_ID: Channels-124
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Generate version
+        id: version
+        run: echo "sha=sha-${GITHUB_SHA::8}" >> "$GITHUB_OUTPUT"
+
+      - name: Login to registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build and push
+        run: |
+          docker build -t ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ steps.version.outputs.sha }} .
+          docker push ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ steps.version.outputs.sha }}
+
+      - name: Create Octopus Release
+        run: |
+          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \
+            -H "X-Octopus-ApiKey: ${{ secrets.OCTOPUS_API_KEY }}" \
+            -H "Content-Type: application/json" \
+            "${{ env.OCTOPUS_SERVER }}/api/${{ env.OCTOPUS_SPACE_ID }}/releases" \
+            -d '{
+              "ProjectId": "${{ env.OCTOPUS_PROJECT_ID }}",
+              "ChannelId": "${{ env.OCTOPUS_CHANNEL_ID }}",
+              "Version": "${{ steps.version.outputs.sha }}",
+              "SelectedPackages": [
+                {
+                  "ActionName": "Deploy Non-Prod Image",
+                  "PackageReferenceName": "demo-app",
+                  "Version": "${{ steps.version.outputs.sha }}"
+                }
+              ]
+            }')
+          HTTP_CODE=$(echo "$RESPONSE" | tail -1)
+          BODY=$(echo "$RESPONSE" | sed '$d')
+          echo "Response: $BODY"
+          if [ "$HTTP_CODE" -ge 400 ]; then
+            echo "::error::Failed to create release (HTTP $HTTP_CODE)"
+            exit 1
+          fi
+          echo "Release created successfully"

.gitea/workflows/build-prod.yml

@@ -0,0 +1,62 @@
+name: Build Prod Image
+
+on:
+  push:
+    tags: ['v*']
+
+env:
+  REGISTRY: gitea.oreillyit.nz
+  IMAGE: acme-prod/demo-app
+  OCTOPUS_SERVER: https://taniwha.octopus.app
+  OCTOPUS_SPACE_ID: Spaces-102
+  OCTOPUS_PROJECT_ID: Projects-101
+  OCTOPUS_CHANNEL_ID: Channels-125
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Generate version
+        id: version
+        run: echo "sha=sha-${GITHUB_SHA::8}" >> "$GITHUB_OUTPUT"
+
+      - name: Login to registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build and push
+        run: |
+          docker build -t ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ steps.version.outputs.sha }} .
+          docker push ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ steps.version.outputs.sha }}
+
+      - name: Create Octopus Release
+        run: |
+          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \
+            -H "X-Octopus-ApiKey: ${{ secrets.OCTOPUS_API_KEY }}" \
+            -H "Content-Type: application/json" \
+            "${{ env.OCTOPUS_SERVER }}/api/${{ env.OCTOPUS_SPACE_ID }}/releases" \
+            -d '{
+              "ProjectId": "${{ env.OCTOPUS_PROJECT_ID }}",
+              "ChannelId": "${{ env.OCTOPUS_CHANNEL_ID }}",
+              "Version": "prod-${{ steps.version.outputs.sha }}",
+              "SelectedPackages": [
+                {
+                  "ActionName": "Deploy Prod Image",
+                  "PackageReferenceName": "demo-app",
+                  "Version": "${{ steps.version.outputs.sha }}"
+                }
+              ]
+            }')
+          HTTP_CODE=$(echo "$RESPONSE" | tail -1)
+          BODY=$(echo "$RESPONSE" | sed '$d')
+          echo "Response: $BODY"
+          if [ "$HTTP_CODE" -ge 400 ]; then
+            echo "::error::Failed to create release (HTTP $HTTP_CODE)"
+            exit 1
+          fi
+          echo "Release created successfully"

Dockerfile

@@ -0,0 +1,3 @@
+FROM alpine:3.21
+LABEL org.opencontainers.image.source="https://gitea.oreillyit.nz/octopus.oreillyit.nz/demo-app"
+CMD ["echo", "Hello from demo-app"]

README.md

@@ -1,3 +1,16 @@
-# demo-app
+# Demo App — Dual Image Channel Pattern
 
-Demo app for dual-image channel pattern
+Demonstrates Octopus Deploy's channel pattern for routing non-prod and prod container images through separate lifecycles.
+
+## How it works
+
+- **Push to `main`** → builds non-prod image → pushes to `acme-nonprod/demo-app` → creates Octopus release in Non-Prod channel
+- **Push a `v*` tag** → builds prod image → pushes to `acme-prod/demo-app` → creates Octopus release in Prod channel
+
+Each channel has its own lifecycle:
+- Non-Prod: Development → Staging (cannot reach Production)
+- Prod: Staging → Production
+
+## Octopus Space
+
+https://taniwha.octopus.app/app#/Spaces-102