fix: move sieve install to the front

try to invalidate cache as little as possible

pkg/dockerfile/generator.go

@@ -94,11 +94,11 @@ func (g *Generator) GenerateBase() (string, error) {
 		g.installTini(),
 		installPython,
 		g.installCython(),
-		g.installSieve(),
 		aptInstalls,
 		pipInstalls,
 		pythonRequirements,
 		run,
+		g.installSieve(),
 		`WORKDIR /src`,
 		`EXPOSE 5000`,
 		`CMD ["python", "-m", "cog.server.http"]`,