[StepSecurity] Apply security best practices

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/devcontainers/dotnet:dev-10.0
+FROM mcr.microsoft.com/devcontainers/dotnet@sha256:9f7ffb9b90b8b291d72d86cb5108e9808e0282d81611fc234abeb383eae59033
 
 # [Optional] Uncomment this section to install additional OS packages.
 # RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \

.github/dependabot.yml

@@ -46,10 +46,13 @@ updates:
         group-by: dependency-name
         patterns:
           - "JsonSchemaNet.*"
+    # Central Package Management: all versions live in the Directory.Packages.props
+    # at each of these roots, so Dependabot only needs to scan the roots.
     directories:
-      - "/build"
-      - "/new-cli"
-      - "/src"
+      - /build
+      - /new-cli
+      - /src
+      - /tests/integration
     schedule:
       interval: cron
       cronjob: "0 12 * * *"
@@ -65,8 +68,8 @@ updates:
         patterns:
           - "actions/*"
     directories:
-      - "/.github/workflows"
-      - "/.github/actions"
+      - /.github/workflows
+      - /.github/actions
     schedule:
       interval: cron
       cronjob: "0 12 * * *"
@@ -84,3 +87,13 @@ updates:
     schedule:
       interval: cron
       cronjob: "0 12 1,15 * *"
+
+  - package-ecosystem: docker
+    directory: /.devcontainer
+    schedule:
+      interval: daily
+
+  - package-ecosystem: docker
+    directory: /build/docker
+    schedule:
+      interval: daily

.github/workflows/_artifacts_linux.yml

@@ -28,6 +28,11 @@ jobs:
         docker_distro: ${{ fromJson(inputs.docker_distros) }}
         dotnet_version: ${{ fromJson(inputs.dotnet_versions) }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/_artifacts_windows.yml

@@ -15,6 +15,11 @@ jobs:
         package: [ Executable, MsBuildFull ]
 
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/_build.yml

@@ -15,6 +15,11 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/_docker.yml

@@ -34,6 +34,11 @@ jobs:
         docker_distro: ${{ fromJson(inputs.docker_distros) }}
         dotnet_version: ${{ fromJson(inputs.dotnet_versions) }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/_docker_manifests.yml

@@ -28,6 +28,11 @@ jobs:
         docker_distro: ${{ fromJson(inputs.docker_distros) }}
         dotnet_version: ${{ fromJson(inputs.dotnet_versions) }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/_prepare.yml

@@ -22,6 +22,11 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
@@ -59,6 +64,11 @@ jobs:
       docker_distros: ${{ steps.set_matrix.outputs.docker_distros }}
       dotnet_versions: ${{ steps.set_matrix.outputs.dotnet_versions }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 

.github/workflows/_publish.yml

@@ -9,6 +9,9 @@ env:
   DOTNET_INSTALL_DIR: "./.dotnet"
   DOTNET_ROLL_FORWARD: "Major"
 
+permissions:
+  contents: read
+
 jobs:
   publish:
     name: ${{ matrix.taskName }}
@@ -23,6 +26,11 @@ jobs:
         taskName: [ NuGet, Chocolatey ]
 
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/_unit_tests.yml

@@ -11,6 +11,9 @@ env:
   DOTNET_INSTALL_DIR: "./.dotnet"
   DOTNET_ROLL_FORWARD: "Major"
 
+permissions:
+  contents: read
+
 jobs:
   unit_test:
     name: ${{ matrix.os }} - net${{ matrix.dotnet_version }}
@@ -24,6 +27,11 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/actionlint.yml

@@ -33,6 +33,11 @@ jobs:
       checks: write
       pull-requests: write
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 

.github/workflows/ci.yml

@@ -36,6 +36,9 @@ env:
 
   ENABLED_DIAGNOSTICS: ${{ vars.ENABLED_DIAGNOSTICS }}
 
+permissions:
+  contents: read
+
 jobs:
   prepare:
     name: Prepare
@@ -51,6 +54,11 @@ jobs:
     outputs:
       can_publish: ${{ steps.flags.outputs.can_publish }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Resolve publish flag
         id: flags
         shell: bash
@@ -165,6 +173,11 @@ jobs:
       GITHUB_TOKEN: ${{ github.token }}
       CAN_PUBLISH: ${{ github.event_name == 'repository_dispatch' }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/codeql-analysis.yml

@@ -49,6 +49,11 @@ jobs:
         language: [ 'csharp' ]
 
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/dependency-review.yml

@@ -0,0 +1,27 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part of a Pull Request,
+# surfacing known-vulnerable versions of the packages declared or updated in the PR.
+# Once installed, if the workflow run is marked as required,
+# PRs introducing known-vulnerable packages will be blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
+      - name: 'Checkout Repository'
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@a1d282b36b6f3519aa1f3fc636f609c47dddb294 # v5.0.0

.github/workflows/docs.yml

@@ -36,6 +36,11 @@ jobs:
     runs-on: ubuntu-24.04
 
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
@@ -88,6 +93,11 @@ jobs:
     needs: [ prepare ]
     runs-on: ubuntu-24.04
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
@@ -129,6 +139,11 @@ jobs:
       GITHUB_TOKEN: ${{ github.token }}
       GITHUB_USERNAME: ${{ github.actor }}
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:

.github/workflows/format.yml

@@ -39,6 +39,11 @@ jobs:
     runs-on: ubuntu-24.04
     name: DotNet Format
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 

.github/workflows/gittools-actions.yml

@@ -23,6 +23,11 @@ jobs:
     name: Update GitTools Actions
     runs-on: ubuntu-24.04
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Get version
         id: get-version
         shell: pwsh

.github/workflows/homebrew.yml

@@ -19,6 +19,11 @@ jobs:
     name: Bump Homebrew formula
     runs-on: macos-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Get version
         id: get-version
         shell: pwsh

.github/workflows/mkdocs.yml

@@ -28,6 +28,11 @@ jobs:
     name: Update Markdown (embedded snippets)
     runs-on: ubuntu-24.04
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: gittools/cicd/checkout@824c3d773fb5d1b00c26b474ae88b7ce9ae555ee # v5
         with:

.github/workflows/new-cli.yml

@@ -40,6 +40,11 @@ jobs:
     runs-on: ubuntu-24.04
     name: Build & Test (new-cli)
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 

.github/workflows/public-api.yml

@@ -14,6 +14,11 @@ jobs:
     name: Mark public API as shipped
     runs-on: ubuntu-24.04
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: gittools/cicd/checkout@824c3d773fb5d1b00c26b474ae88b7ce9ae555ee # v5
         with:

.github/workflows/release.yml

@@ -3,13 +3,21 @@ on:
   release:
     types: [ published ]
 
+permissions:
+  contents: read
+
 jobs:
   release:
     name: Trigger ci flow
     runs-on: ubuntu-24.04
     permissions:
       contents: write
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0