diff --git a/Dockerfile b/Dockerfile
index 70f4d3a..42fe3b3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM hadolint/hadolint:v1.17.5-alpine
 
-COPY LICENSE README.md /
+COPY LICENSE README.md problem-matcher.json /
 COPY hadolint.sh /usr/local/bin/hadolint.sh
 
 ENTRYPOINT [ "/usr/local/bin/hadolint.sh" ]
diff --git a/hadolint.sh b/hadolint.sh
index 23d6cb9..3827766 100755
--- a/hadolint.sh
+++ b/hadolint.sh
@@ -1,5 +1,14 @@
 #!/bin/sh
 
-echo '::add-matcher::problem-matcher.json'
+# The problem-matcher definition must be present in the repository
+# checkout (outside the Docker container running hadolint). We create
+# a temporary folder and copy problem-matcher.json to it and make it
+# readable.
+TMP_FOLDER=$(mktemp -d -p .)
+cp /problem-matcher.json "${TMP_FOLDER}"
+chmod -R a+rX "${TMP_FOLDER}"
+trap "rm -rf \"${TMP_FOLDER}\"" EXIT
+
+echo "::add-matcher::${TMP_FOLDER}/problem-matcher.json"
 
 hadolint "$@"