consolidate dockerfile

Taskfile.yml

@@ -3,29 +3,34 @@ version: '3'
 vars:
   UNAME:
     sh: uname
-  GOOS:
-    sh: go env GOOS
-  DOCKER_WINDOWS_EXE: C:/build/listen/listen.exe
-  DOCKER_EXE: /usr/src/listen/listen
 
 tasks:
   default:
+    cmd: "echo {{OS}}"
     deps:
-      - go-build
-  
-  go-build:
+      - build:go
+
+  build:go:
+    aliases:
+      - build
     cmds:
-      - "go build -o out/{{.GOOS}}/listen ."
-    precondition:
+      - "go build -o out/{{OS}}/ ."
+    preconditions:
       - "which go"
 
-  docker-build:
+  build:docker:
     cmds:
-      - "docker build -t listen-build -f docker/build.$os.Dockerfile -e GOOS='{{.GOOS}}' ."
-      - "mkdir -p out/{{.GOOS}}"
+      - "docker build -t listen-build -f docker/build.Dockerfile --build-arg GOOS='{{OS}}' ."
+      - "mkdir -p out/{{OS}}"
       - "docker create --name listen-build-tmp listen-build"
-      - "docker cp listen-build-tmp:{{.DOCKER_EXE}} out/{{.GOOS}}"
+      - cmd: "docker cp listen-build-tmp:/usr/src/listen/out/{{OS}}/listen.exe out/{{OS}}"
+        platforms:
+          - windows
+      - cmd: "docker cp listen-build-tmp:/usr/src/listen/out/{{OS}}/listen out/{{OS}}"
+        platforms:
+          - darwin
+          - linux
       - "docker rm listen-build-tmp"
-    precondition:
+    preconditions:
       - "which docker"
       - "uname | grep -qe Linux -e MINGW"

docker/build.linux.Dockerfile

@@ -1,16 +0,0 @@
-# This Dockerfile is meant for building listen for Linux ONLY
-# listen is currently not intended to run in a Docker container
-
-ARG IMAGE="1-alpine"
-
-FROM golang:${IMAGE} AS build
-
-ENV GOOS="linux"
-
-WORKDIR /usr/src/listen
-COPY . .
-
-RUN apk upgrade --no-cache
-RUN go build .
-
-CMD ["tail", "-f", "/dev/null"]

docker/build.windows.Dockerfile

@@ -1,13 +0,0 @@
-# This Dockerfile is meant for building listen for Windows ONLY
-# listen is currently not intended to run in a Docker container
-
-ARG IMAGE="1-nanoserver"
-
-FROM golang:${IMAGE} AS build
-
-WORKDIR C:/build/listen
-COPY . .
-
-RUN go build .
-
-CMD ["ping.exe", "-t", "localhost"]