Add deployment helm chart.

.github/workflows/check_charts.yml

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+name: Lint and Test Charts
+
+on:
+  push:
+    branches:
+    - main
+    tags:
+    - '*'
+    paths:
+      # Only run test and docker publish if some code have changed
+      - 'deployment/k8s/charts/**'
+      - '.github/workflows/check_charts.yaml'
+      - 'pyproject.toml'
+  pull_request:
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v4
+        with:
+          version: v3.9.2
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Set up chart-testing
+        uses: helm/[email protected]
+
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed --chart-dirs deployment/k8s --target-branch ${{ github.event.repository.default_branch }})
+          if [[ -n "$changed" ]]; then
+            echo "::set-output name=changed::true"
+          fi
+
+      - name: Run chart-testing (lint)
+        run: ct lint --chart-dirs deployment/k8s --target-branch ${{ github.event.repository.default_branch }}
+
+      - name: Build container
+        uses: docker/build-push-action@v6
+        if: steps.list-changed.outputs.changed == 'true'
+        with:
+          # See https://github.com/developmentseed/titiler/discussions/387
+          platforms: linux/amd64
+          context: .
+          file: Dockerfile
+          push: false
+          tags: "titiler-openeo:dev"
+
+      - name: Create kind cluster
+        uses: helm/[email protected]
+        if: steps.list-changed.outputs.changed == 'true'
+
+      - name: Load container image in kind cluster
+        run: kind load docker-image titiler-openeo:dev --name chart-testing
+        if: steps.list-changed.outputs.changed == 'true'
+
+      - name: Run chart-testing (install)
+        run: ct install --chart-dirs deployment/k8s
+        if: steps.list-changed.outputs.changed == 'true'

deployment/k8s/README.md

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+## k8s / Helm Deployment
+
+Try locally
+
+```
+# set up minikube locally
+minikube start
+kubectl config use-context minikube
+
+# run in the k8s directory
+helm upgrade --install titiler-openeo .
+
+# then you may want to get the ingress
+minikube addons enable ingress
+
+# obtain the ip and port the service is locally available at
+minikube service ingress-nginx-controller -n ingress-nginx --url | head -n 1
+```

deployment/k8s/charts/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

deployment/k8s/charts/Chart.yaml

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+apiVersion: v1
+appVersion: 0.1.0
+description: OpenEO by TiTiler
+name: titiler-openeo
+version: 0.1.0
+icon: https://raw.githubusercontent.com/developmentseed/titiler/main/docs/logos/TiTiler_logo_small.png
+maintainers:
+  - name: DevelopmentSeed
+    url: https://github.com/developmentseed

deployment/k8s/charts/ci/default-values.yaml

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+replicaCount: 1
+
+image:
+  repository: titiler-openeo
+  tag: dev