Use a single container for build & run

Dockerfile

@@ -1,6 +1,15 @@
-FROM debian:bookworm
+FROM golang:1.22
+WORKDIR /usr/src/app
+
+# pre-copy/cache go.mod for pre-downloading dependencies and only redownloading them in subsequent builds if they change
+COPY go.mod go.sum ./
+RUN go mod download && go mod verify
+
+COPY . .
+RUN go build
+
 EXPOSE 8080:8080
 
 # Copy the backend binary
 COPY ./card-jong-be .
-ENTRYPOINT ["card-jong-be"]
+CMD ["card-jong-be"]

Jenkinsfile

@@ -2,18 +2,7 @@ pipeline {
     agent any
 
     stages {
-        stage('Build binary') {
+        stage("Run & build") {
-            agent {
-                docker {
-                    image "golang:1.22-bookworm"
-                    reuseNode true
-                }
-            }
-            steps {
-                sh 'go build'
-            }
-        }
-        stage("Deploy") {
             steps {
                 sh "docker compose up --build -d"
             }

docker-compose.yml

@@ -5,4 +5,3 @@ services:
     build: .
     ports:
       - "9126:8080"
-