From efe5b75d030213e0ff6a9907637e3717b666d8b0 Mon Sep 17 00:00:00 2001
From: Armin Friedl <dev@friedl.net>
Date: Fri, 18 Dec 2020 14:19:49 +0100
Subject: [PATCH] Add gdb and instructions

---
 Dockerfile |  3 ++-
 README.md  | 10 +++++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index d67da0f..c1e9bcf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,8 @@ RUN apt-get update && apt-get upgrade -y
 
 RUN apt-get install -y flex-old bison build-essential \
     csh libxaw7-dev wget \
-    libc6-i386 default-jdk
+    libc6-i386 default-jdk \
+    gdb
 
 # Install student dist
 
diff --git a/README.md b/README.md
index e6a4691..e1ccaf1 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,15 @@ accessible from the container:
 ```shell
 docker run -it -v $PWD:/class:Z arminfriedl/lukewarm
 #   or
-podman run -it -v $PWD:/class arminfriedl/lukewarm
+podman run -it -v $PWD:/class:Z arminfriedl/lukewarm
+```
+
+If you want to debug with gdb you will need to enable:
+
+```shell
+docker run it -v $PWD:/class --cap-add=SYS_PTRACE --security-opt seccomp=unconfined arminfriedl/lukewarm
+#   or
+podman run -it -v $PWD:/class --cap-add=SYS_PTRACE --security-opt seccomp=unconfined arminfriedl/lukewarm
 ```
 
 You can find the repository the container image is built from on