Episode 3 Docker container - push to private repo.

.github/workflows/build-episodes.yml

@@ -13,12 +13,27 @@ jobs:
     strategy:
       matrix:
         include:
+          # Episode 1.
           - episode: '01'
             dockerfile: Dockerfile
+            repo: kube101
             tag: intro
+
+          # Episode 2.
           - episode: '02'
             dockerfile: Dockerfile
+            repo: kube101
             tag: hello-go
+          - episode: '02'
+            dockerfile: Dockerfile
+            repo: kube101-go
+            tag: '1.0.0'
+
+          # Episode 3.
+          - episode: '03'
+            dockerfile: Dockerfile
+            repo: kube101-go
+            tag: '1.1.0'
 
     steps:
       - uses: actions/checkout@v2
@@ -38,4 +53,4 @@ jobs:
           file: ./episode-${{ matrix.episode }}/${{ matrix.dockerfile }}
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: geerlingguy/kube101:${{ matrix.tag }}
+          tags: geerlingguy/${{ matrix.repo }}:${{ matrix.tag }}

.github/workflows/ci.yml

@@ -9,8 +9,8 @@ name: CI
     - cron: "40 5 * * 0"
 
 jobs:
-  episode-2:
-    name: Episode 2
+  hello-go:
+    name: Hello Go
     runs-on: ubuntu-latest
 
     steps:
@@ -20,6 +20,10 @@ jobs:
         with:
           go-version: "1.15.x"
 
-      - name: Run hello Go app tests.
+      - name: Run hello Go app tests (Episode 2).
+        run: go test
+        working-directory: episode-02/cmd/hello
+
+      - name: Run hello Go app tests (Episode 3).
         run: go test
         working-directory: episode-02/cmd/hello

episode-03/Dockerfile

@@ -0,0 +1,13 @@
+FROM golang:1-alpine as build
+
+WORKDIR /app
+COPY cmd cmd
+RUN go build cmd/hello/hello.go
+
+FROM alpine:latest
+
+WORKDIR /app
+COPY --from=build /app/hello /app/hello
+
+EXPOSE 8180
+ENTRYPOINT ["./hello"]

episode-03/cmd/hello/hello.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+)
+
+// HelloServer responds to requests with the given URL path.
+func HelloServer(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintf(w, "Hi, you requested: %s", r.URL.Path)
+	log.Printf("Received request for path: %s", r.URL.Path)
+}
+
+func main() {
+	var addr string = ":8180"
+	handler := http.HandlerFunc(HelloServer)
+	log.Printf("Starting webserver on %s", addr)
+	if err := http.ListenAndServe(addr, handler); err != nil {
+		log.Fatalf("Could not listen on port %s %v", addr, err)
+	}
+}

episode-03/cmd/hello/hello_test.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestGetHello(t *testing.T) {
+	t.Run("Returns current path", func(t *testing.T) {
+		request, _ := http.NewRequest(http.MethodGet, "/testing", nil)
+		response := httptest.NewRecorder()
+
+		HelloServer(response, request)
+
+		got := response.Body.String()
+		want := "Hi, you requested: /testing"
+
+		if got != want {
+			t.Errorf("got %q, want %q", got, want)
+		}
+	})
+}