Build pkg in docker

packaging/deb/rules

@@ -1,6 +1,6 @@
 #!/usr/bin/make -f
 
-export OFFLINE = @OFFLINE@
+export OFFLINE = @OFFLINE@ BUILD_FE=0
 
 %:
 	dh $@

packaging/pkgbuild/PKGBUILD.in

@@ -25,7 +25,7 @@ build() {
   # Must unset the CFLAGS, otherwise the build fails
   unset CFLAGS
 
-  make build OFFLINE=@OFFLINE@
+  make build OFFLINE=@OFFLINE@ BUILD_FE=0
 }
 
 package() {

packaging/rpm/globalprotect-openconnect.spec.in

@@ -35,7 +35,9 @@ A GUI for GlobalProtect VPN, based on OpenConnect, supports the SSO authenticati
 %setup
 
 %build
-make build OFFLINE=@OFFLINE@
+# The injected RUSTFLAGS could fail the build
+unset RUSTFLAGS
+make build OFFLINE=@OFFLINE@ BUILD_FE=0
 
 %install
 %make_install