Fixes "dup build" issues for >= v1.0.0

src/command.nim

@@ -152,7 +152,7 @@ proc down*(conf: ProjectConfig) {.raises: [].} =
 ## Builds the image, passing build arguments in
 proc build*(conf: ProjectConfig, noCache: bool = false) =
   var hasEnv = false
-  var buildArgs = argsToStr[BuildArgs](conf.buildArgs)
+  var buildArgs = buildArgsToStr(conf.buildArgs)
   for arg in conf.buildArgs:
     if arg.name == "env": hasEnv = true
   if not hasEnv:

src/config.nim

@@ -52,10 +52,14 @@ proc data*(config: ProjectConfig): string =
   ## Helper proc for getting data container name
   result = config.name & "-data"
 
-proc argsToStr*[T](args: T): string {.raises: [].} =
+proc argsToStr*(args: Args): string {.raises: [].} =
   result = ""
-  var marker = " -e "
-  if name(T) == "BuildArgs":
-    marker = " --build-arg "
+  let marker = " -e "
+  for arg in args:
+    result &= marker & quoteShellPosix(arg.name) & "=" & quoteShellPosix(arg.value)
+
+proc buildArgsToStr*(args: BuildArgs): string {.raises: [].} =
+  result = ""
+  var marker = " --build-arg "
   for arg in args:
     result &= marker & quoteShellPosix(arg.name) & "=" & quoteShellPosix(arg.value)

test/config_test.nim

@@ -14,10 +14,10 @@ suite "config.argsToStr":
 
   test "works with BuildArgs":
     let args: BuildArgs = @[newArg("example", "value")]
-    let result = argsToStr(args)
+    let result = buildArgsToStr(args)
     check(result == " --build-arg example=value")
 
   test "works with Args":
     let args: Args = @[newArg("example2", "value2")]
     let result = argsToStr(args)
-    check(result == " --build-arg example2=value2")
+    check(result == " -e example2=value2")