Adds Dockerfile and staging configuration

Dockerfile

@@ -0,0 +1,16 @@
+FROM node:alpine AS builder
+
+RUN mkdir /crc-bpmn
+WORKDIR /crc-bpmn
+
+ADD package.json /crc-bpmn/
+
+COPY . /crc-bpmn/
+
+RUN npm install && \
+    npm run build:staging
+
+FROM nginx:alpine
+
+COPY --from=builder /crc-bpmn/dist/* /usr/share/nginx/html/
+

angular.json

@@ -54,6 +54,30 @@
                   "maximumError": "5mb"
                 }
               ]
+            },
+            "staging": {
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.staging.ts"
+                }
+              ],
+              "optimization": true,
+              "outputHashing": "all",
+              "sourceMap": false,
+              "extractCss": true,
+              "namedChunks": false,
+              "aot": true,
+              "extractLicenses": true,
+              "vendorChunk": false,
+              "buildOptimizer": true,
+              "budgets": [
+                {
+                  "type": "initial",
+                  "maximumWarning": "2mb",
+                  "maximumError": "5mb"
+                }
+              ]
             }
           }
         },

package.json

@@ -5,6 +5,9 @@
     "ng": "ng",
     "start": "ng serve",
     "build": "ng build",
+    "build:prod": "ng build --configuration=production",
+    "build:staging": "ng build --configuration=staging",
+    "build:test": "ng build --configuration=test",
     "test": "ng test",
     "lint": "ng lint",
     "e2e": "./node_modules/protractor/bin/webdriver-manager update && ng e2e"