feat: custom command builder

Implemented custom command builder with nicer api suited for my needs.
Also returned error if there are no containers in
`scripts::postgres::get_containers`.

src/scripts/mod.rs

@@ -2,63 +2,3 @@ pub mod django;
 pub mod docker;
 pub mod docker_compose;
 pub mod postgres;
-
-use std::{
-    ffi::OsStr,
-    fs::{File, OpenOptions},
-    path::PathBuf,
-    process::{Command, Stdio},
-};
-
-use anyhow::{Context, Result};
-
-struct DockerCommand {
-    command: Command,
-}
-
-impl DockerCommand {
-    fn new<T>(program: T) -> Self
-    where
-        T: AsRef<OsStr>,
-    {
-        DockerCommand {
-            command: Command::new(program),
-        }
-    }
-
-    fn docker() -> Self {
-        Self::new("docker")
-    }
-
-    fn docker_compose() -> Self {
-        Self::new("docker").args("compose -f docker/local/docker-compose.yaml")
-    }
-
-    fn args(mut self, args: &str) -> Self {
-        self.command.args(args.split_whitespace());
-        self
-    }
-
-    fn stdout(mut self) -> Result<String> {
-        Ok(String::from_utf8(self.command.output()?.stdout)?)
-    }
-
-    fn spawn_wait(mut self) -> Result<()> {
-        self.command.spawn()?.wait()?;
-        Ok(())
-    }
-
-    fn write_stdout(mut self, stdio: Stdio) -> Result<()> {
-        self.command.stdout(stdio);
-        self.spawn_wait()?;
-        Ok(())
-    }
-}
-
-fn safe_create_file(path: PathBuf) -> Result<File, std::io::Error> {
-    OpenOptions::new().write(true).create_new(true).open(path)
-}
-
-fn create_file(path: PathBuf) -> Result<File, std::io::Error> {
-    OpenOptions::new().write(true).create(true).open(path)
-}