chore(deps): pin dependencies

.devcontainer/Dockerfile

@@ -1,3 +1,3 @@
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version
-ARG RUBY_VERSION=3.4.2
+ARG RUBY_VERSION=3.4.2@sha256:d3e8ee0a845de0ae100c9615335e404370d71838a39a3c71912407f95559755e
 FROM ghcr.io/rails/devcontainer/images/ruby:$RUBY_VERSION

.devcontainer/compose.yaml

@@ -23,17 +23,17 @@ services:
     - postgres
 
   selenium:
-    image: selenium/standalone-chromium
+    image: selenium/standalone-chromium@sha256:36474a4c56765ec3d04dc4cbac57a021e0d88e89fdb5dca297a50f1100279c1a
     restart: unless-stopped
 
   redis:
-    image: redis:7.2
+    image: redis:7.2@sha256:b265edbf010b4d590d4e46e8265aa2f719b9f76354c18b6bf3100cac41ab1b31
     restart: unless-stopped
     volumes:
     - redis-data:/data
 
   postgres:
-    image: postgres:16.1
+    image: postgres:16.1@sha256:09f23e02d76670d3b346a3c00aa33a27cf57aab8341eedfcdaed41459d14f5c4
     restart: unless-stopped
     networks:
     - default

.github/workflows/security-check.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Setup Ruby
         # Install the version defined in .ruby-version
         uses: ruby/setup-ruby@v1

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
       id-token: write # to get access to GitHub autogenerated OIDC token, used by codecov/codecov-action
 
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Setup Ruby
         # Install the version defined in .ruby-version
         uses: ruby/setup-ruby@v1
@@ -62,20 +62,20 @@ jobs:
         run: bin/rails test:all
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5.4.3
+        uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
         with:
           use_oidc: true
 
       - name: Keep screenshots from failed system tests
-        uses: actions/upload-artifact@v4.6.2
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         if: failure() && steps.tests.conclusion == 'failure'
         with:
           name: screenshots
           path: ${{ github.workspace }}/tmp/screenshots
           if-no-files-found: ignore
 
       - name: Upload test results to Codecov
-        uses: codecov/test-results-action@v1.1.1
+        uses: codecov/test-results-action@47f89e9acb64b76debcd5ea40642d25a4adced9f # v1.1.1
         if: ${{ !cancelled() }}
         with:
           use_oidc: true

Dockerfile

@@ -1,4 +1,4 @@
-# syntax = docker/dockerfile:1
+# syntax = docker/dockerfile:1@sha256:4a43a54dd1fedceb30ba47e76cfcf2b47304f4161c0caeac2db1c61804ea3c91
 
 # This Dockerfile is designed for production, not development. Use with Kamal or build'n'run by hand:
 # docker build -t my-app .