[ci] hyperledger#2865: Remove usage of tmp file from scripts/check.sh

Signed-off-by: Shanin Roman <shanin1000@yandex.ru>

scripts/check.sh

@@ -1,30 +1,24 @@
 #!/bin/sh
 set -e
 
-TMPFILE=$(mktemp)
-
 case $1 in
     "docs")
-        cargo run --bin kagami -- docs >"$TMPFILE"
-        diff "$TMPFILE" docs/source/references/config.md || {
+        cargo run --bin kagami -- docs | diff - docs/source/references/config.md || {
             echo 'Please re-generate docs using `cargo run --bin kagami -- docs > docs/source/references/config.md`'
             exit 1
         };;
     "genesis")
-        cargo run --bin kagami -- genesis >"$TMPFILE"
-        diff "$TMPFILE" configs/peer/genesis.json || {
+        cargo run --bin kagami -- genesis | diff - configs/peer/genesis.json || {
             echo 'Please re-generate the genesis with `cargo run --bin kagami -- genesis > configs/peer/genesis.json`'
             exit 1
         };;
     "client")
-        cargo run --bin kagami -- client >"$TMPFILE"
-        diff "$TMPFILE" configs/client_cli/config.json || {
+        cargo run --bin kagami -- client | diff - configs/client_cli/config.json || {
             echo 'Please re-generate client config with `cargo run --bin kagami -- client > configs/client_cli/config.json`'
             exit 1
         };;
     "schema")
-        cargo run --bin kagami -- schema >"$TMPFILE"
-        diff "$TMPFILE" docs/source/references/schema.json || {
+        cargo run --bin kagami -- schema | diff - docs/source/references/schema.json || {
             echo 'Please re-generate schema with `cargo run --bin kagami -- schema > docs/source/references/schema.json`'
             exit 1
         };;