ignore DL4006

.github/workflows/docker-lint.yml

@@ -42,7 +42,8 @@ jobs:
             # DL3002 warning: Last USER should not be root
             # DL3003 warning: Use WORKDIR to switch to a directory
             # DL3004 error: Do not use sudo as it leads to unpredictable behavior. Use a tool like gosu to enforce root
-            hadolint "$file" --ignore DL3018 --ignore DL3008 --ignore DL3002 --ignore DL3003 --ignore DL3004 | tee -a ./hadolint.log
+            # DL4006 warning: Set the SHELL option -o pipefail before RUN with a pipe in it. If you are using /bin/sh in an alpine image or if your shell is symlinked to busybox then consider explicitly setting your SHELL to /bin/ash, or disable this check
+            hadolint "$file" --ignore DL3018 --ignore DL3008 --ignore DL3002 --ignore DL3003 --ignore DL3004 --ignore DL4006 | tee -a ./hadolint.log
           done
           cat ./hadolint.log
           if grep -q "DL[0-9]\+\|SC[0-9]\+" ./hadolint.log; then