Switch from alpine to wolfi

docs/lab1/3_deploy-image-to-cluster.md

@@ -26,7 +26,7 @@ spec:
       description: Digest of the image to be used.
   steps:
     - name: update-yaml
-      image: alpine
+      image: cgr.dev/chainguard/wolfi-base
       command: ["sed"]
       args:
         - "-i"
@@ -46,7 +46,7 @@ spec:
 
 This task has two steps.
 
-1. The first step runs the `sed` command in an Alpine Linux container and updates the yaml file used for deployment. This step replaces the default image reference `__IMAGE__` by the image that was built by the `kaniko` task `__DIGEST__`. This step requires the yaml file to have two character strings, `__IMAGE__` and `__DIGEST__`, which are substituted with parameter values.
+1. The first step runs the `sed` command in an Wolfi container and updates the yaml file used for deployment. This step replaces the default image reference `__IMAGE__` by the image that was built by the `kaniko` task `__DIGEST__`. This step requires the yaml file to have two character strings, `__IMAGE__` and `__DIGEST__`, which are substituted with parameter values.
 
 2. The second step runs the `kubectl` command using a `k8s-kubectl` container image by Lachlan Evenson, to apply the yaml file to the same cluster where the pipeline is running.
 

docs/lab1/allTogether.md

@@ -443,7 +443,7 @@ spec:
       description: Digest of the image to be used.
   steps:
     - name: update-yaml
-      image: alpine
+      image: cgr.dev/chainguard/wolfi-base
       command: ["sed"]
       args:
         - "-i"
@@ -463,7 +463,7 @@ spec:
 
 This task has two steps.
 
-1. The first step runs the `sed` command in an Alpine Linux container and updates the yaml file used for deployment. This step replaces the default image reference `__IMAGE__` by the image that was built by the `kaniko` task `__DIGEST__`. This step requires the yaml file to have two character strings, `__IMAGE__` and `__DIGEST__`, which are substituted with parameter values.
+1. The first step runs the `sed` command in an Wolfi container and updates the yaml file used for deployment. This step replaces the default image reference `__IMAGE__` by the image that was built by the `kaniko` task `__DIGEST__`. This step requires the yaml file to have two character strings, `__IMAGE__` and `__DIGEST__`, which are substituted with parameter values.
 
 2. The second step runs the `kubectl` command using a `k8s-kubectl` container image by Lachlan Evenson, to apply the yaml file to the same cluster where the pipeline is running.
 

src/Dockerfile

@@ -5,7 +5,7 @@ FROM golang:1.12 as builder
 
 # Copy local code to the container image.
 WORKDIR /go/src/github.com/IBM/tekton-tutorial
-COPY picalc.go picalc_test.go .
+COPY picalc.go picalc_test.go ./
 
 # Run unit tests
 RUN CGO_ENABLED=0 GOOS=linux go test
@@ -15,7 +15,7 @@ RUN CGO_ENABLED=0 GOOS=linux go build -v -o picalc
 
 # Use a Docker multi-stage build to create a lean production image.
 # https://docs.docker.com/develop/develop-images/multistage-build/#use-multi-stage-builds
-FROM alpine
+FROM cgr.dev/chainguard/wolfi-base
 
 # Copy the binary to the production image from the builder stage.
 COPY --from=builder /go/src/github.com/IBM/tekton-tutorial/picalc /picalc

tekton/tasks/deploy-using-kubectl.yaml

@@ -18,7 +18,7 @@ spec:
       description: Digest of the image to be used.
   steps:
     - name: update-yaml
-      image: alpine
+      image: cgr.dev/chainguard/wolfi-base
       command: ["sed"]
       args:
         - "-i"