Use shell parameter expansion to make getting source path work in non-bash shells (#24598)

Currently `BASH_SOURCE[0]` was used, which is only available on bash.

I changed it to `${BASH_SOURCE:-$0}` which is supported by at least
bash, zsh and dash, as explained by
[https://stackoverflow.com/a/68359914/9028340](https://stackoverflow.com/a/68359914/9028340)

It uses shell parameter expansion

https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html

https://zsh.sourceforge.io/Doc/Release/Expansion.html#Parameter-Expansion

Addresses #17392

.github/dockerfiles/docker_tag

@@ -1 +1 @@
-pr-24395
+pr-24598

samples/cpp/build_samples.sh

@@ -17,7 +17,7 @@ usage() {
     exit 1
 }
 
-samples_type="$(basename "$(dirname "$(realpath "${BASH_SOURCE[0]}")")")"
+samples_type="$(basename "$(dirname "$(realpath "${BASH_SOURCE:-$0}")")")"
 samples_build_dir="$HOME/openvino_${samples_type}_samples_build"
 sample_install_dir=""
 
@@ -55,7 +55,7 @@ error() {
 }
 trap 'error ${LINENO}' ERR
 
-SAMPLES_SOURCE_DIR="$( cd "$( dirname "$(realpath "${BASH_SOURCE[0]}")" )" && pwd )"
+SAMPLES_SOURCE_DIR="$( cd "$( dirname "$(realpath "${BASH_SOURCE:-$0}")" )" && pwd )"
 printf "\nSetting environment variables for building samples...\n"
 
 if [ -z "$INTEL_OPENVINO_DIR" ]; then

scripts/install_dependencies/install_openvino_dependencies.sh

@@ -66,7 +66,7 @@ if [ -n "$selftest" ] ; then
             echo "||"
             echo "|| Test $image / '$opt'"
             echo "||"
-            SCRIPT_DIR="$( cd "$( dirname "$(realpath "${BASH_SOURCE[0]}")" )" >/dev/null 2>&1 && pwd )"
+            SCRIPT_DIR="$( cd "$( dirname "$(realpath "${BASH_SOURCE:-$0}")" )" >/dev/null 2>&1 && pwd )"
             docker run -it --rm \
                 --volume "${SCRIPT_DIR}":/scripts:ro,Z  \
                 --volume yum-cache:/var/cache/yum \

scripts/setupvars/setupvars.sh

@@ -10,7 +10,7 @@ abs_path () {
     pwd -P
 }
 
-SCRIPT_DIR="$(abs_path "${BASH_SOURCE[0]}")" >/dev/null 2>&1
+SCRIPT_DIR="$(abs_path "${BASH_SOURCE:-$0}")" >/dev/null 2>&1
 INSTALLDIR="${SCRIPT_DIR}"
 export INTEL_OPENVINO_DIR="$INSTALLDIR"