diff --git a/basis/bin/auto_env.sh b/basis/bin/auto_env.sh
index 3d518d4b..f2699323 100755
--- a/basis/bin/auto_env.sh
+++ b/basis/bin/auto_env.sh
@@ -40,6 +40,9 @@ if [ "$TF_VAR_db_password" == "__TO_FILL__" ]; then
   echo "> TF_VAR_db_password=$TF_VAR_db_password"
 fi
 
+# Livelabs Green Button (Autodetect compartment/vcn/subnet)
+livelabs_green_button
+
 # -- env.sh
 # Do not stop if __TO_FILL__ are not replaced if TF_VAR_group_name exist in env variable
 # XXX -> It would be safer to check also for TF_VAR_xxx containing __TO_FILL__ too
diff --git a/basis/bin/shared_bash_function.sh b/basis/bin/shared_bash_function.sh
index 32d2e1ab..eed8fb0f 100755
--- a/basis/bin/shared_bash_function.sh
+++ b/basis/bin/shared_bash_function.sh
@@ -235,6 +235,70 @@ get_ui_url() {
   fi
 }
 
+livelabs_green_button() {
+  # Lot of tests to be sure we are in a empty Green Button LiveLabs
+  # compartment_ocid still undefined ? 
+  if grep -q '# export TF_VAR_compartment_ocid=ocid1.compartment.xxxxx' $PROJECT_DIR/env.sh; then
+    # vnc_ocid still undefined ? 
+    if [ "$TF_VAR_vcn_ocid" != "__TO_FILL__" ]; then
+      # Variables already set
+      return
+    fi
+    # In cloud shell ? 
+    if [ -z $OCI_CLI_CLOUD_SHELL ]; then 
+      return
+    fi
+    # Whoami user format ? 
+    if [[ `whoami` =~ ^ll.*_u.* ]]; then
+      echo "LiveLabs - Green Button - User name in llxxx_uxx format"
+    else
+      return
+    fi
+    get_user_details
+    # OCI User name format ? 
+    if [[ $TF_VAR_username =~ ^LL.*-USER$ ]]; then
+      echo "LiveLabs - Green Button"
+    else
+      return
+    fi
+
+    export USER_BASE=`echo "${TF_VAR_username/-USER/}"` 
+    echo USER_BASE=$USER_BASE
+
+    export TF_VAR_compartment_ocid=`oci iam compartment list --compartment-id-in-subtree true --all | jq -c -r '.data[] | select(.name | contains("'$USER_BASE'")) | .id'`
+    echo TF_VAR_compartment_ocid=$TF_VAR_compartment_ocid
+
+    if [ "$TF_VAR_compartment_ocid" != "" ]; then
+      sed -i "s&# export TF_VAR_compartment_ocid=ocid1.compartment.xxxxx&export TF_VAR_compartment_ocid=\"$TF_VAR_compartment_ocid\"&" $PROJECT_DIR/env.sh
+      echo "TF_VAR_compartment_ocid stored in env.sh"
+    fi  
+
+    export TF_VAR_vcn_ocid=`oci network vcn list --compartment-id $TF_VAR_compartment_ocid | jq -c -r '.data[].id'`
+    echo TF_VAR_vcn_ocid=$TF_VAR_vcn_ocid  
+    if [ "$TF_VAR_vcn_ocid" != "" ]; then
+      sed -i "s&TF_VAR_vcn_ocid=\"__TO_FILL__\"&TF_VAR_vcn_ocid=\"$TF_VAR_vcn_ocid\"&" $PROJECT_DIR/env.sh
+      echo "TF_VAR_vcn_ocid stored in env.sh"
+    fi  
+
+    export TF_VAR_subnet_ocid=`oci network subnet list --compartment-id $TF_VAR_compartment_ocid | jq -c -r '.data[].id'`
+    echo TF_VAR_subnet_ocid=$TF_VAR_subnet_ocid  
+    if [ "$TF_VAR_subnet_ocid" != "" ]; then
+      sed -i "s&TF_VAR_public_subnet_ocid=\"__TO_FILL__\"&TF_VAR_public_subnet_ocid=\"$TF_VAR_subnet_ocid\"&" $PROJECT_DIR/env.sh
+      sed -i "s&TF_VAR_private_subnet_ocid=\"__TO_FILL__\"&TF_VAR_private_subnet_ocid=\"$TF_VAR_subnet_ocid\"&" $PROJECT_DIR/env.sh
+      echo "TF_VAR_subnet_ocid stored in env.sh"
+      # Set the real variables such that the first ./build.sh works too.
+      export TF_VAR_public_subnet_ocid=$TF_VAR_subnet_ocid
+      export TF_VAR_private_subnet_ocid=$TF_VAR_subnet_ocid
+    fi  
+    
+    # LiveLabs support only E4 Shapes
+    if grep -q '# export TF_VAR_instance_shape=VM.Standard.E4.Flex' $PROJECT_DIR/env.sh; then
+      sed -i "s&# export TF_VAR_instance_shape=&export TF_VAR_instance_shape=&" $PROJECT_DIR/env.sh
+    fi
+
+  fi
+}
+
 create_deployment_in_apigw() {
 # Publish the API with an API Deployment to API Gateway
   if [ "$APIGW_DEPLOYMENT_OCID" != "" ]; then
diff --git a/py_oci_starter.py b/py_oci_starter.py
index 09fd575f..cdc686f7 100755
--- a/py_oci_starter.py
+++ b/py_oci_starter.py
@@ -503,6 +503,12 @@ def env_sh_contents():
     contents.append('  # API Management')
     contents.append('  # export APIM_HOST=xxxx-xxx.adb.region.oraclecloudapps.com')
     contents.append('')
+
+    if params.get('instance_shape') == None:   
+        contents.append('  # Compute Shape')
+        contents.append('  # export TF_VAR_instance_shape=VM.Standard.E4.Flex')
+        contents.append('')
+
     contents.append('  # Landing Zone')
     contents.append('  # export TF_VAR_lz_appdev_cmp_ocid=$TF_VAR_compartment_ocid')
     contents.append('  # export TF_VAR_lz_database_cmp_ocid=$TF_VAR_compartment_ocid')