refactor: enhance CA certificate splitting logic in entrypoint script

Updated the entrypoint script to improve the processing of CA certificates. The new implementation splits both bundled and individual .crt files into separate certificates, ensuring better organization and handling of custom CA certificates. This change enhances the robustness of the certificate setup process.

Author: pratapaprasanna

deploy/docker/fs/opt/appsmith/entrypoint.sh

@@ -381,17 +381,18 @@ setup-custom-ca-certificates() (
     -srcstorepass changeit \
     -deststorepass changeit
 
-  # Process each certificate file
-  find -L "$stacks_ca_certs_path" -maxdepth 1 -type f -o -type l -name '*.crt' | while read -r cert_file; do
-    # For ca_bundle.crt, split into individual certificates
-    if [[ "$(basename "$cert_file")" == "ca_bundle.crt" ]]; then
-      # Split the bundle into individual certificates
-      awk 'split_after==1{n++;split_after=0} /-----END CERTIFICATE-----/ {split_after=1} {print > ("'"$temp_cert_dir"'/cert" n ".crt")}' "$cert_file"
-    else
-      # For individual .crt files, just copy them
-      cp "$cert_file" "$temp_cert_dir/cert$(basename "$cert_file")"
-    fi
-  done
+  # Split every .crt file (bundle or single) into individual certs
+  cert_index=0
+  while read -r cert_file; do
+    awk -v prefix="$temp_cert_dir/cert" -v ext=".crt" -v idx="$cert_index" '
+      BEGIN {n=0}
+      /-----BEGIN CERTIFICATE-----/,/-----END CERTIFICATE-----/ {
+        print > (prefix idx "_" n ext)
+        if (/-----END CERTIFICATE-----/) n++
+      }
+    ' "$cert_file"
+    cert_index=$((cert_index + 1))
+  done < <(find -L "$stacks_ca_certs_path" -maxdepth 1 -type f -o -type l -name '*.crt')
 
   # Import all certificates from the temp directory
   find "$temp_cert_dir" -type f -name '*.crt' | while read -r cert_file; do