chore: [StepSecurity] Apply security best practices (#230)

Author: step-security-bot

.github/workflows/codeql.yml

@@ -0,0 +1,78 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: ["master"]
+  schedule:
+    - cron: "0 0 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ["python"]
+        # CodeQL supports [ $supported-codeql-languages ]
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@03bee3930647ebbf994244c21ddbc0d4933aab4f # v2.3.0
+        with:
+          egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
+
+      - name: Checkout repository
+        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@7df0ce34898d659f95c0c4a09eaa8d4e32ee64db # v2.2.12
+        with:
+          languages: ${{ matrix.language }}
+          # If you wish to specify custom queries, you can do so here or in a config file.
+          # By default, queries listed here will override any specified in a config file.
+          # Prefix the list here with "+" to use these queries and those in the config file.
+
+      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+      # If this step fails, then you should remove it and run the build manually (see below)
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@7df0ce34898d659f95c0c4a09eaa8d4e32ee64db # v2.2.12
+
+      # ℹ️ Command-line programs to run using the OS shell.
+      # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+      #   If the Autobuild fails above, remove it and uncomment the following three lines.
+      #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+      # - run: |
+      #   echo "Run, Build Application using script"
+      #   ./location_of_script_within_repo/buildscript.sh
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@7df0ce34898d659f95c0c4a09eaa8d4e32ee64db # v2.2.12
+        with:
+          category: "/language:${{matrix.language}}"

.github/workflows/dependency-review.yml

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+# 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 Runner
+        uses: step-security/harden-runner@03bee3930647ebbf994244c21ddbc0d4933aab4f # v2.3.0
+        with:
+          egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
+
+      - name: 'Checkout Repository'
+        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@0efb1d1d84fc9633afcdaad14c485cbbc90ef46c # v2.5.1

examples/cloud_run_cloud_events/Dockerfile

@@ -1,6 +1,6 @@
 # Use the official Python image.
 # https://hub.docker.com/_/python
-FROM python:3.7-slim
+FROM python:3.7-slim@sha256:adbcdfcd0511bab2d6db252e55b983da1b431598ed755c1620b291fbeb5f6f72
 
 # Copy local code to the container image.
 ENV APP_HOME /app

examples/cloud_run_decorator/Dockerfile

@@ -1,6 +1,6 @@
 # Use the official Python image.
 # https://hub.docker.com/_/python
-FROM python:3.7-slim
+FROM python:3.7-slim@sha256:adbcdfcd0511bab2d6db252e55b983da1b431598ed755c1620b291fbeb5f6f72
 
 # Copy local code to the container image.
 ENV APP_HOME /app

examples/cloud_run_event/Dockerfile

@@ -1,6 +1,6 @@
 # Use the official Python image.
 # https://hub.docker.com/_/python
-FROM python:3.7-slim
+FROM python:3.7-slim@sha256:adbcdfcd0511bab2d6db252e55b983da1b431598ed755c1620b291fbeb5f6f72
 
 # Copy local code to the container image.
 ENV APP_HOME /app

examples/cloud_run_http/Dockerfile

@@ -1,6 +1,6 @@
 # Use the official Python image.
 # https://hub.docker.com/_/python
-FROM python:3.7-slim
+FROM python:3.7-slim@sha256:adbcdfcd0511bab2d6db252e55b983da1b431598ed755c1620b291fbeb5f6f72
 
 # Copy local code to the container image.
 ENV APP_HOME /app