diff --git a/README.md b/README.md
index be7d0ff..711b09c 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,14 @@ Comma-separated list of linter tags (selectors) for the `vcs-diff-lint` utility
 * default value: `undefined`
 * requirements: `optional`
 
+### install\_rpm\_packages
+
+Space-separated list of RPM packages that are automatically installed into the
+testing environment (= Docker container).
+
+* default value: `undefined`
+* requirements: `optional`
+
 ### debug
 
 Turn on debugging info.
diff --git a/action.yml b/action.yml
index 649949c..02d632e 100644
--- a/action.yml
+++ b/action.yml
@@ -29,6 +29,12 @@ inputs:
     required: false
     default: "pylint"
 
+  install_rpm_packages:
+    description: |
+      Space-separated list of RPM packages that are automatically installed into
+      the testing environment (= Docker container).
+    required: false
+
   debug:
     description: Turn on debugging info.
     default: 'false'
diff --git a/container/cmd b/container/cmd
index 7dcc9fe..ab24a17 100755
--- a/container/cmd
+++ b/container/cmd
@@ -63,6 +63,11 @@ analyze_subdir()
     vcs-diff-lint --print-fixed-errors "${linter_options[@]}" || result=false
 }
 
+if test -n "$INPUT_INSTALL_RPM_PACKAGES"; then
+    # shellcheck disable=SC2086
+    dnf install -y $INPUT_INSTALL_RPM_PACKAGES
+fi
+
 if test "$GITHUB_EVENT_NAME" = 'pull_request'; then
     git config --global --add safe.directory '*'
     git config --global advice.detachedHead false