EHN: fix cert.sh

linkahead/cert.sh

-#!/bin/bash
+#!/bin/sh
 
 source .env
 export KEYPW="$CERTIFICATES_KEY_PASSWORD"
@@ -6,7 +6,7 @@ export DOIP_SERVICE_ID="${DOIP_SERVICE_ID/\//\\/}"
 export DNS_HOST_NAME
 
 mkdir -p cert
-pushd cert
+cd cert
 
 # create encrypted private key
 openssl genrsa -aes256 -out key.pem -passout env:KEYPW 2048
@@ -23,4 +23,4 @@ openssl pkcs12 -export -inkey key.pem -in cert.pem -out cert.pkcs12 -passin env:
 # convert pkcs12 store to java keystore
 keytool -importkeystore -srckeystore cert.pkcs12 -srcstoretype PKCS12 -deststoretype pkcs12 -destkeystore keystore.jks -srcstorepass "${KEYPW}" -destkeypass "${KEYPW}" -deststorepass "${KEYPW}"
 
-popd
+cd ../