Fix the missing 'ruby' in stub docker command

Author: toolmantim

tests/command.bats

@@ -22,7 +22,7 @@ load "$BATS_PATH/load.bash"
   stub buildkite-agent "artifact download junits/*.xml /plugin/tests/tmp//plugin/junit-artifacts : echo Downloaded artifacts" \
                        "annotate --context junit --style error : echo Annotation added"
 
-  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine /src/bin/annotate /junits : echo '<details>Failure</details>'"
+  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine ruby /src/bin/annotate /junits : echo '<details>Failure</details>'"
 
   run "$PWD/hooks/command"
 
@@ -49,7 +49,7 @@ load "$BATS_PATH/load.bash"
   stub buildkite-agent "artifact download junits/*.xml /plugin/tests/tmp//plugin/junit-artifacts : echo Downloaded artifacts" \
                        "annotate --context junit --style error : echo Annotation added"
 
-  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine /src/bin/annotate /junits : echo '<details>Failure</details>'"
+  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine ruby /src/bin/annotate /junits : echo '<details>Failure</details>'"
 
   run "$PWD/hooks/command"
 
@@ -76,7 +76,7 @@ load "$BATS_PATH/load.bash"
   stub buildkite-agent "artifact download junits/*.xml /plugin/tests/tmp//plugin/junit-artifacts : echo Downloaded artifacts" \
                        "annotate --context junit --style error : echo Annotation added"
 
-  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN='custom_(*)_pattern.xml' --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT='file' ruby:2.5-alpine /src/bin/annotate /junits : echo '<details>Failure</details>'"
+  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN='custom_(*)_pattern.xml' --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT='file' ruby:2.5-alpine ruby /src/bin/annotate /junits : echo '<details>Failure</details>'"
 
   run "$PWD/hooks/command"
 
@@ -101,7 +101,7 @@ load "$BATS_PATH/load.bash"
 
   stub buildkite-agent "artifact download junits/*.xml /plugin/tests/tmp//plugin/junit-artifacts : echo Downloaded artifacts"
 
-  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine /src/bin/annotate /junits : echo No test errors"
+  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine ruby /src/bin/annotate /junits : echo No test errors"
 
   run "$PWD/hooks/command"
 
@@ -135,7 +135,7 @@ load "$BATS_PATH/load.bash"
 
   stub buildkite-agent "artifact download junits/*.xml /plugin/tests/tmp//plugin/junit-artifacts : echo Downloaded artifacts"
 
-  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine /src/bin/annotate /junits : echo '<details>Failure</details>'"
+  stub docker "--log-level error run --rm --volume /plugin/tests/tmp//plugin/junit-artifacts:/junits --volume /plugin/hooks/../ruby:/src --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_JOB_UUID_FILE_PATTERN= --env BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAILURE_FORMAT= ruby:2.5-alpine ruby /src/bin/annotate /junits : echo '<details>Failure</details>'"
 
   run "$PWD/hooks/command"