Feat add custom build push (#1630)

* feat: support custom build and push commands

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

* test: add functional tests of the support of custom build and push

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

* docs: add docs of the support of custom build and push

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

---------

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

script/test/cmd/tests_new.sh

@@ -272,3 +272,8 @@ convert::expect_success "$os_cmd" "$os_output"
 k8s_cmd="kompose -f $KOMPOSE_ROOT/script/test/fixtures/network-policies/docker-compose.yaml convert --generate-network-policies --stdout --with-kompose-annotation=false"
 k8s_output="$KOMPOSE_ROOT/script/test/fixtures/network-policies/output-k8s.yaml"
 convert::expect_success "$os_cmd" "$os_output"
+
+# Test support for custom build and push images
+k8s_cmd="kompose -f $KOMPOSE_ROOT/script/test/fixtures/custom-build-push/docker-compose.yaml convert --build-command 'docker build -t ahmedgrati/kompose-test ./script/test/fixtures/custom-build-push' --push-command 'docker push ahmedgrati/kompose-test' --stdout --with-kompose-annotation=false"
+k8s_output="$KOMPOSE_ROOT/script/test/fixtures/custom-build-push/output-k8s.yaml"
+convert::expect_success "$os_cmd" "$os_output"

script/test/fixtures/custom-build-push/Dockerfile

@@ -0,0 +1,3 @@
+FROM busybox
+
+CMD ["sleep", "4800"]

script/test/fixtures/custom-build-push/docker-compose.yaml

@@ -0,0 +1,10 @@
+version: '3.8'
+
+networks:
+  web:
+
+services:
+  nginx:
+    image: nginx
+    networks: 
+    - web

script/test/fixtures/custom-build-push/output-k8s.yaml

@@ -0,0 +1,44 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  creationTimestamp: null
+  labels:
+    io.kompose.service: nginx
+  name: nginx
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      io.kompose.service: nginx
+  strategy: {}
+  template:
+    metadata:
+      creationTimestamp: null
+      labels:
+        io.kompose.network/custom-build-push-web: "true"
+        io.kompose.service: nginx
+    spec:
+      containers:
+        - image: nginx
+          name: nginx
+          resources: {}
+      restartPolicy: Always
+status: {}
+
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  creationTimestamp: null
+  name: custom-build-push-web
+spec:
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              io.kompose.network/custom-build-push-web: "true"
+  podSelector:
+    matchLabels:
+      io.kompose.network/custom-build-push-web: "true"
+