Rename image to container

.github/workflows/checks.yml

@@ -67,7 +67,7 @@ jobs:
       - name: Check for differences
         env:
           MESSAGE: |
-            
+
             The dependency relationships between the modules in rippled have
             changed, which may be an improvement or a regression.
 

.github/workflows/debian.yml

@@ -139,17 +139,17 @@ jobs:
         run: |
           echo "Checking path"
           echo ${PATH} | tr ':' '\n'
-          
+
           echo "Checking environment variables."
           env | sort
       - name: Check versions
         run: |
           echo "Checking release."
           lsb_release -a
-          
+
           echo "Checking CMake version."
           cmake --version
-          
+
           echo "Checking compiler version."
           ${{ matrix.os.compiler_name }} --version
       - name: Configure Conan
@@ -180,7 +180,7 @@ jobs:
         build_type: ${{ fromJson(needs.generate-matrix.outputs.build_type) }}
         unity: ${{ fromJson(needs.generate-matrix.outputs.unity) }}
     runs-on: ${{ matrix.architecture.runner }}
-    image: ghcr.io/xrplf/ci/debian-${{ matrix.os.release }}:${{ matrix.os.compiler_name }}-${{ matrix.os.compiler_version }}
+    container: ghcr.io/xrplf/ci/debian-${{ matrix.os.release }}:${{ matrix.os.compiler_name }}-${{ matrix.os.compiler_version }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683

.github/workflows/documentation.yml

@@ -30,14 +30,14 @@ jobs:
         run: |
           echo "Checking path"
           echo ${PATH} | tr ':' '\n'
-          
+
           echo "Checking environment variables."
           env | sort
       - name: Check versions
         run: |
           echo "Checking CMake version."
           cmake --version
-          
+
           echo "Checking Doxygen version."
           doxygen --version
       - name: Build documentation