diff --git a/.github/scripts/docker/Dockerfile b/.github/scripts/docker/Dockerfile
index bbf978d26..f75d74854 100644
--- a/.github/scripts/docker/Dockerfile
+++ b/.github/scripts/docker/Dockerfile
@@ -31,10 +31,12 @@ LABEL github_repo="https://github.com/k2-fsa/icefall"
 RUN pip install --no-cache-dir \
       torch==${TORCH_VERSION} torchaudio==${TORCHAUDIO_VERSION} -f https://download.pytorch.org/whl/cpu/torch_stable.html \
       k2==${_K2_VERSION} -f https://k2-fsa.github.io/k2/cpu.html \
+      \
       git+https://github.com/lhotse-speech/lhotse \
       kaldifeat==${_KALDIFEAT_VERSION} -f https://csukuangfj.github.io/kaldifeat/cpu.html \
       dill \
       graphviz \
+      kaldi-decoder \
       kaldi_native_io \
       kaldialign \
       kaldifst \
diff --git a/.github/scripts/librispeech/ASR/run.sh b/.github/scripts/librispeech/ASR/run.sh
index 2fdfc6e32..641d59458 100755
--- a/.github/scripts/librispeech/ASR/run.sh
+++ b/.github/scripts/librispeech/ASR/run.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -ex
+
 log() {
   # This function is from espnet
   local fname=${BASH_SOURCE[1]##*/}
diff --git a/.github/scripts/yesno/ASR/run.sh b/.github/scripts/yesno/ASR/run.sh
index c3f445d8c..05c8fbac9 100755
--- a/.github/scripts/yesno/ASR/run.sh
+++ b/.github/scripts/yesno/ASR/run.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -ex
+
 log() {
   # This function is from espnet
   local fname=${BASH_SOURCE[1]##*/}