Change the recommended version of ROCm to 5.6

docs/dockerhub.rst

@@ -30,7 +30,7 @@ run a docker container::
     --group-add sudo                                                      \
     -w /root/workspace                                                    \
     -v ${PATH_TO_LOCAL_WORKSPACE}:/root/workspace                         \
-    rocm/composable_kernel:ck_ub20.04_rocm5.3_release                     \
+    rocm/composable_kernel:ck_ub20.04_rocm5.6                             \
     /bin/bash
 
 and build the CK::
@@ -76,12 +76,11 @@ The docker images have everything you need for running CK including:
 Which image is right for me?
 -------------------------------------
 
-Let's take a look at the image naming, for example ``ck_ub20.04_rocm5.4_release``. The image specs are:
+Let's take a look at the image naming, for example ``ck_ub20.04_rocm5.6``. The image specs are:
 
 * ``ck`` - made for running Composable Kernel;
 * ``ub20.04`` - based on Ubuntu 20.04;
-* ``rocm5.4`` - ROCm platform version 5.4;
-* ``release`` - compiler version is release.
+* ``rocm5.6`` - ROCm platform version 5.6.
 
 So just pick the right image for your project dependencies and you're all set.
 

docs/tutorial_hello_world.rst

@@ -72,8 +72,8 @@ First let's clone the library and rebase to the tested version::
 To make our lives easier we prepared
 `docker images <https://hub.docker.com/r/rocm/composable_kernel>`_ with all the necessary
 dependencies. Pick the right image and create a container. In this tutorial we use
-``rocm/composable_kernel:ck_ub20.04_rocm5.3_release`` image, it is based on Ubuntu 20.04,
-ROCm v5.3 and a release version of compiler.
+``rocm/composable_kernel:ck_ub20.04_rocm5.6`` image, it is based on Ubuntu 20.04 and
+ROCm v5.6.
 
 If your current folder is ``${HOME}``, start the docker container with::
 
@@ -83,7 +83,7 @@ If your current folder is ``${HOME}``, start the docker container with::
     --group-add sudo  \
     -w /root/workspace  \
     -v ${HOME}:/root/workspace  \
-    rocm/composable_kernel:ck_ub20.04_rocm5.3_release  \
+    rocm/composable_kernel:ck_ub20.04_rocm5.6  \
     /bin/bash
 
 If your current folder is different from ``${HOME}``, adjust the line ``-v ${HOME}:/root/workspace``