diff --git a/Dockerfile b/Dockerfile
index 5552ecb917b..481b63d2407 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ ARG starenv=root5
 # Pick one from [gcc485, gcc11]
 ARG compiler=gcc485
 
-FROM ghcr.io/star-bnl/star-spack:v0.3.0-${starenv}-${compiler}
+FROM ghcr.io/star-bnl/star-spack:v0.2.3-${starenv}-${compiler}
 
 ARG compiler
 
diff --git a/mgr/config/v0.3.0-rhel7-root5.34.38.config b/mgr/config/v0.3.0-rhel7-root5.34.38.config
deleted file mode 100644
index bfb649b306d..00000000000
--- a/mgr/config/v0.3.0-rhel7-root5.34.38.config
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env csh
-
-# this is in place of buggy `module clear` (module VERSION=3.2.10 DATE=2012-12-21)
-unsetenv _LMFILES_*
-
-if ( $USE_64BITS == 1 ) then
-    module purge
-    module unuse /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86/
-    module use   /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86_64/
-else
-    module purge
-    module unuse /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86_64/
-    module use   /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86/
-endif
-
-module load star-env-0.3.0-root-5.34.38
diff --git a/mgr/config/v0.3.0-rhel7-root6.16.00.config b/mgr/config/v0.3.0-rhel7-root6.16.00.config
deleted file mode 100644
index b33b1856c90..00000000000
--- a/mgr/config/v0.3.0-rhel7-root6.16.00.config
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env csh
-
-# this is in place of buggy `module clear` (module VERSION=3.2.10 DATE=2012-12-21)
-unsetenv _LMFILES_*
-
-if ( $USE_64BITS == 1 ) then
-    module purge
-    module unuse /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86/
-    module use   /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86_64/
-else
-    module purge
-    module unuse /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86_64/
-    module use   /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86/
-endif
-
-module load star-env-0.3.0-root-6.16.00
diff --git a/mgr/config/v0.3.0-rhel7-root6.24.06.config b/mgr/config/v0.3.0-rhel7-root6.24.06.config
deleted file mode 100644
index 80efe1ef9cb..00000000000
--- a/mgr/config/v0.3.0-rhel7-root6.24.06.config
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env csh
-
-# this is in place of buggy `module clear` (module VERSION=3.2.10 DATE=2012-12-21)
-unsetenv _LMFILES_*
-
-if ( $USE_64BITS == 1 ) then
-    module purge
-    module unuse /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86/
-    module use   /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86_64/
-else
-    module purge
-    module unuse /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86_64/
-    module use   /cvmfs/star.sdcc.bnl.gov/star-spack/spack/share/spack/modules/linux-rhel7-x86/
-endif
-
-module load star-env-0.3.0-root-6.24.06