fix(ci): creates ~/sign instead of ./sign

Signed-off-by: Vicente J. Jiménez Miras <vjjmiras@gmail.com>

.circleci/config.yml

@@ -221,12 +221,14 @@ jobs:
             echo "%_signature gpg" > ~/.rpmmacros
             echo "%_gpg_name  Falcosecurity Package Signing" >> ~/.rpmmacros
             echo "%__gpg_sign_cmd %{__gpg} --force-v3-sigs --batch --no-armor --passphrase-fd 3 --no-secmem-warning -u \"%{_gpg_name}\" -sb --digest-algo sha256 %{__plaintext_filename}'" >> ~/.rpmmacros
-            echo '#!/usr/bin/expect -f' > sign
-            echo 'spawn rpmsign --addsign {*}$argv' >> sign
-            echo 'expect -exact "Enter pass phrase: "' >> sign
-            echo 'send -- "\n"' >> sign
-            echo 'expect eof' >> sign
-            chmod +x sign
+            cat > ~/sign \\<<EOF
+            #!/usr/bin/expect -f
+            spawn rpmsign --addsign {*}$argv
+            expect -exact "Enter pass phrase: "
+            send -- "\n"
+            expect eof
+            EOF
+            chmod +x ~/sign
             echo $GPG_KEY | base64 -d | gpg --import
       - run:
           name: Sign rpm x86_64