[chore] add OSSF Scorecard workflow (#38679)

This follows
open-telemetry/opentelemetry-collector#9317

---------

Signed-off-by: Alex Boten <[email protected]>

Author: codeboten

.github/workflows/scorecard.yml

@@ -0,0 +1,69 @@
+name: Scorecard supply-chain security
+
+on:
+  # For Branch-Protection check. Only the default branch is supported. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
+  branch_protection_rule:
+  # To guarantee Maintained check is occasionally updated. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
+  schedule:
+    - cron: '39 1 * * 3'
+  push:
+    branches: [ "main" ]
+
+# Declare default permissions as read only.
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed to upload the results to code-scanning dashboard.
+      security-events: write
+      # Needed to publish results and get a badge (see publish_results below).
+      id-token: write
+      # Uncomment the permissions below if installing in a private repository.
+      # contents: read
+      # actions: read
+
+    steps:
+      - name: "Checkout code"
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - name: "Run analysis"
+        uses: ossf/scorecard-action@f49aabe0b5af0936a0987cfb85d86b75731b0186 # v2.4.1
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          # (Optional) "write" PAT token. Uncomment the `repo_token` line below if:
+          # - you want to enable the Branch-Protection check on a *public* repository, or
+          # - you are installing Scorecard on a *private* repository
+          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-pat.
+          # repo_token: ${{ secrets.SCORECARD_TOKEN }}
+
+          # Public repositories:
+          #   - Publish results to OpenSSF REST API for easy access by consumers
+          #   - Allows the repository to include the Scorecard badge.
+          #   - See https://github.com/ossf/scorecard-action#publishing-results.
+          # For private repositories:
+          #   - `publish_results` will always be set to `false`, regardless
+          #     of the value entered here.
+          publish_results: true
+
+      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
+      # format to the repository Actions tab.
+      - name: "Upload artifact"
+        uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4.6.1
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      # Upload the results to GitHub's code scanning dashboard.
+      - name: "Upload to code-scanning"
+        uses: github/codeql-action/upload-sarif@6bb031afdd8eb862ea3fc1848194185e076637e5 # v3.28.11
+        with:
+          sarif_file: results.sarif

cmd/otelcontribcol/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:latest AS prep
+FROM alpine:latest@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c AS prep
 RUN apk --update add ca-certificates
 
 FROM scratch

cmd/telemetrygen/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:latest AS certs
+FROM alpine:latest@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c AS certs
 RUN apk --update add ca-certificates
 
 FROM scratch

exporter/clickhouseexporter/example/Dockerfile

@@ -1,7 +1,7 @@
-FROM alpine:latest AS certs
+FROM alpine:latest@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c AS certs
 RUN apk --update add ca-certificates
 
-FROM golang:latest
+FROM golang:latest@sha256:fa145a3c13f145356057e00ed6f66fbd9bf017798c9d7b2b8e956651fe4f52da
 
 ARG USER_UID=10001
 USER ${USER_UID}

exporter/loadbalancingexporter/example/Dockerfile

@@ -1,11 +1,11 @@
-FROM golang:1.24 AS build
+FROM golang:1.24@sha256:fa145a3c13f145356057e00ed6f66fbd9bf017798c9d7b2b8e956651fe4f52da AS build
 
 WORKDIR /src
 ADD . /src
 
 RUN make otelcontribcol
 
-FROM alpine:latest AS certs
+FROM alpine:latest@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c AS certs
 RUN apk --update add ca-certificates
 
 FROM scratch

receiver/sqlqueryreceiver/testdata/integration/sqlserver/Dockerfile

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/mssql/server:2022-latest
+FROM mcr.microsoft.com/mssql/server:2022-latest@sha256:ea73825f3d88a23c355ac2f9fdc6bd960fec90171c12c572109b36a558f77bb8
 
 ENV ACCEPT_EULA=Y
 ENV SA_PASSWORD=YourStrong!Passw0rd