diff --git a/.github/workflows/opentofu.yml b/.github/workflows/opentofu.yml
index f274670..c291d3e 100644
--- a/.github/workflows/opentofu.yml
+++ b/.github/workflows/opentofu.yml
@@ -11,10 +11,6 @@ on:
         description: Runner label
         type: string
         default: arc-tf
-      container-image:
-        description: Optional container image for GitHub-hosted runners
-        type: string
-        default: ""
       setup-ssh:
         description: Whether to setup SSH keys
         type: boolean
@@ -56,10 +52,6 @@ jobs:
       id-token: write
       pull-requests: write
     runs-on: ${{ inputs.runs-on }}
-    container: ${{ inputs.container-image || null }}
-    defaults:
-      run:
-        shell: bash
     steps:
       - name: Checkout
         id: checkout
@@ -222,10 +214,6 @@ jobs:
       id-token: write
       pull-requests: write
     runs-on: ${{ inputs.runs-on }}
-    container: ${{ inputs.container-image || null }}
-    defaults:
-      run:
-        shell: bash
     if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
     needs: [test]
     steps:
@@ -317,10 +305,6 @@ jobs:
       contents: read
       id-token: write
     runs-on: ${{ inputs.runs-on }}
-    container: ${{ inputs.container-image || null }}
-    defaults:
-      run:
-        shell: bash
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     needs: [test]
     steps: