feat: change to bash to allow echo -n

ops-bedrock/Dockerfile.l1

@@ -6,4 +6,4 @@ COPY entrypoint-l1.sh /entrypoint.sh
 
 VOLUME ["/db"]
 
-ENTRYPOINT ["/bin/sh", "/entrypoint.sh"]
+ENTRYPOINT ["/bin/bash", "/entrypoint.sh"]

ops-bedrock/entrypoint-l1.sh

-#!/bin/sh
+#!/bin/bash
 set -exu
 
 VERBOSITY=${GETH_VERBOSITY:-3}
@@ -14,8 +14,8 @@ WS_PORT="${WS_PORT:-8546}"
 
 if [ ! -d "$GETH_KEYSTORE_DIR" ]; then
 	echo "$GETH_KEYSTORE_DIR missing, running account import"
-	printf "%s" "pwd" > "$GETH_DATA_DIR"/password
-  printf "%s" "$BLOCK_SIGNER_PRIVATE_KEY" | sed 's/0x//' > "$GETH_DATA_DIR"/block-signer-key
+	echo -n "%s" "pwd" > "$GETH_DATA_DIR"/password
+  echo -n "%s" "$BLOCK_SIGNER_PRIVATE_KEY" | sed 's/0x//' > "$GETH_DATA_DIR"/block-signer-key
   geth account import \
 		--datadir="$GETH_DATA_DIR" \
 		--password="$GETH_DATA_DIR"/password \