Add Dockerfile

This adds a Dockerfile to build bwHC Frontend from current sources.

By passing arguments to the docker build command, the build is able to
modify values in file `nuxt.config.js`.

Dockerfile

@@ -0,0 +1,32 @@
+FROM node:10-alpine
+
+# nuxt host and port to be replaced in package.json. (See 2.3 in bwHCPrototypeManual)
+# NUXT_HOST should have a value with public available IP address from within container.
+# If changing NUXT_PORT, also change exposed port.
+ARG NUXT_HOST=0.0.0.0
+ARG NUXT_PORT=3000
+
+# Backend access setup. (See 2.4 in bwHCPrototypeManual)
+ARG BACKEND_PROTOCOL=http
+ARG BACKEND_HOSTNAME=localhost
+ARG BACKEND_PORT=8080
+
+COPY . /bwhc-frontend
+
+WORKDIR /bwhc-frontend
+
+RUN npm install
+
+# Prepare package.json
+RUN sed -i -r "s/^(\s*)\"host\"[^,]*(,?)/\1\"host\": \"$NUXT_HOST\"\2/" ./package.json
+RUN sed -i -r "s/^(\s*)\"port\"[^,]*(,?)/\1\"port\": \"$NUXT_PORT\"\2/" ./package.json
+
+# Prepare nuxt.config.js
+RUN sed -i -r "s/^(\s*)baseUrl[^,]*(,?)/\1baseUrl: process.env.BASE_URL || '$BACKEND_PROTOCOL:\/\/$BACKEND_HOSTNAME'\2/" ./nuxt.config.js
+RUN sed -i -r "s/^(\s*)port[^,]*(,?)/\1port: process.env.port || ':$BACKEND_PORT'\2/" ./nuxt.config.js
+
+RUN npm run generate
+
+EXPOSE $NUXT_PORT
+
+CMD npm start

README.md

@@ -1,12 +1,12 @@
-# bwHC Frontend 
+# bwHC Frontend
 
 __bwHC Frontend__ is a web application developed using the [nuxt.js](https://nuxtjs.org/docs/get-started/installation/) framework. It is designed to run complementary with the bwHC Backend application.
 
 --------
 
 ## 1. Installation with Install script
 
-* Define the directory for the installation 
+* Define the directory for the installation
 * Run the install script
 
 ```
@@ -101,6 +101,25 @@ Login credentials into the freshly installed system, without any users: admin/ad
 This allows log-in as a temp-user to create a first real user account, and becomes effectless once a user has been created in the system.
 The first created user MUST thus be given "Admin" rights to be able to create more user accounts.
 
+## 3 Docker image
+
+Use the following command to build the docker image
+
+```
+docker build -t bwhc-frontend .
+```
+
+This will create the image using default build arguments and mark it as `bwhc-frontend`. To customize the build, spezify custom values.
+
+* `NUXT_HOST` and `NUXT_PORT`: Server configuration, see 2.3 of bwHC manual for more information.
+* `BACKEND_PROTOCOL`, `BACKEND_HOSTNAME` and `BACKEND_PORT`: Backend access, see 2.4 of bwHC manual for more information.
+
+e.g.:
+
+```
+docker build -t bwhc-frontend --build-arg NUXT_PORT=1234 .
+```
+
 ## License Information
 
 MIT License