[StepSecurity] Apply security best practices

.github/dependabot.yml

@@ -0,0 +1,23 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    groups:
+      dev-dependencies:
+          applies-to: version-updates
+          patterns:
+              - '*'
+          dependency-type: development
+      production-dependencies:
+          applies-to: version-updates
+          patterns:
+              - '*'
+          dependency-type: production
+    cooldown:
+      default-days: 7
+      include:
+          - '*'
+      exclude:
+          - react

.github/workflows/dotnet.yml

@@ -7,6 +7,9 @@ on:
     branches: [ master ]
   workflow_dispatch: {}
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -17,27 +20,32 @@ jobs:
       IMAGE_NAME: ghcr.io/${{ github.repository }}
       PUBLISH: ${{ github.ref == 'refs/heads/master' }}
     steps:
-    - uses: actions/checkout@v2
-    - uses: docker/setup-buildx-action@v2
+    - name: Harden the runner (Audit all outbound calls)
+      uses: step-security/harden-runner@a5ad31d6a139d249332a2605b85202e8c0b78450 # v2.19.1
+      with:
+        egress-policy: audit
+
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0
+    - uses: docker/setup-buildx-action@885d1462b80bc1c1c7f0b00334ad271f09369c55 # v2.10.0
       id: buildx
       with:
         install: true
         version: latest
-    - uses: docker/login-action@v2
+    - uses: docker/login-action@465a07811f14bebb1938fbed4728c6a1ff8901fc # v2.2.0
       if: ${{ env.PUBLISH }}
       with:
         registry: ghcr.io
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
     - id: meta
-      uses: docker/metadata-action@v4
+      uses: docker/metadata-action@818d4b7b91585d195f67373fd9cb0332e31a7175 # v4.6.0
       with:
         images: ${{ env.IMAGE_NAME }}
         tags: |
           type=sha
           type=edge
           type=raw,value=latest,enable={{is_default_branch}}
-    - uses: docker/build-push-action@v3
+    - uses: docker/build-push-action@1104d471370f9806843c095c1db02b5a90c5f8b6 # v3.3.1
       id: build
       with:
         file: Dockerfile

.pre-commit-config.yaml

@@ -0,0 +1,17 @@
+repos:
+- repo: https://github.com/gitleaks/gitleaks
+  rev: v8.16.3
+  hooks:
+  - id: gitleaks
+- repo: https://github.com/jumanjihouse/pre-commit-hooks
+  rev: 3.0.0
+  hooks:
+  - id: shellcheck
+- repo: https://github.com/pre-commit/mirrors-eslint
+  rev: v8.38.0
+  hooks:
+  - id: eslint
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  - id: end-of-file-fixer

Dockerfile

@@ -1,5 +1,5 @@
 # https://hub.docker.com/_/microsoft-dotnet
-FROM mcr.microsoft.com/dotnet/sdk:7.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:7.0@sha256:d32bd65cf5843f413e81f5d917057c82da99737cb1637e905a1a4bc2e7ec6c8d AS build
 WORKDIR ./sources
 
 # copy everything else and build app
@@ -8,7 +8,7 @@ WORKDIR ./sources/WebGoat.NET
 RUN dotnet publish -c release -o /app 
 
 # final stage/image
-FROM mcr.microsoft.com/dotnet/aspnet:7.0
+FROM mcr.microsoft.com/dotnet/aspnet:7.0@sha256:c7d9ee6cd01afe9aa80642e577c7cec9f5d87f88e5d70bd36fd61072079bc55b
 WORKDIR /app
 COPY --from=build /app ./