add Dockerfile, support for default ADIF_URL and TITLE

Author: robertlestak

Dockerfile

@@ -0,0 +1,12 @@
+FROM nginx
+
+WORKDIR /usr/share/nginx/html
+
+ARG ADIF_URL
+ENV ADIF_URL=${ADIF_URL}
+ARG TITLE
+ENV TITLE=${TITLE}
+
+COPY . /usr/share/nginx/html
+
+RUN bash scripts/build.sh

README.md

@@ -33,6 +33,14 @@ To use this mode of the application, simply supply a `url` parameter to the inde
 
 When using this variant of the application, the `Select file...` and `Reset` are disabled and you are only able to load a single [ADIF file][adif] URL.
 
+When building with Docker, you can pass the `ADIF_URL` build arg to set the default URL to load. For example:
+
+```bash
+docker buildx build --build-arg ADIF_URL=sample/short.adi -t qso-mapper .
+```
+
+When set, the `ADIF_URL` takes precedence over the `url` parameter in the URL.
+
 You should consider forking the repository if you intend on using this long-term. That way you can change the map tile *access token* to your own token making sure it works for you long-term. If you don't fork and use your own, you run the risk of what I have here running out of quota and not working at all for you.
 
 # Customization
@@ -45,6 +53,18 @@ As noted above the default map provider is [OpenStreetMap][osm]. The `mapTiles`
 
 If you want to use a different marker icon, take a look in `leaflet-map.js` at the function `createMarker()`. There is a brief bit of commented out code that will make a small blue marker from an icon in the `icons` directory.
 
+## Default ADIF File
+
+If you want to set a default ADIF file to load when the application starts, you can set the `ADIF_URL` variable in `index.html`. This overrides the `url` parameter, making the app load only the file specified.
+
+## Page Title
+
+By default, the page title is `QSO/ADIF Mapper`. If using the `scripts/build.sh` script (the default in Docker) you can pass the `TITLE` environment variable to set the page title. For example:
+
+```bash
+docker buildx build --build-arg TITLE="My QSO Mapper" -t qso-mapper .
+```
+
 # Mentions
 
 I wanted to thank the [Linux in the Ham Shack](http://lhspodcast.info) podcast folks, who picked up on my pushing to [GitHub](https://github.com) and mentioned the project in their [Party Like it's 1499](http://lhspodcast.info/2018/10/lhs-episode-251-party-like-its-1499/comment-page-1/#comment-689046) episode. As an ex-scoutmaster for a Boy Scout troop, I think it would be an excellent idea to use QSO Mapper to show your [Jamboree on the Air](https://www.scouting.org/jota/) contacts!

deploy/k8s/deployment.yaml

@@ -0,0 +1,32 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: qso-mapper
+  namespace: default
+  labels:
+    app: qso-mapper
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: qso-mapper
+  template:
+    metadata:
+      labels:
+        app: qso-mapper
+    spec:
+      containers:
+      - name: qso-mapper
+        image: registry.example.com/qso-mapper:latest
+        imagePullPolicy: Always
+        ports:
+          - containerPort: 80
+            name: http
+        resources:
+          requests:
+            memory: "64Mi"
+            cpu: "250m"
+          limits:
+            memory: "128Mi"
+            cpu: "500m"

deploy/k8s/service.yaml

@@ -0,0 +1,16 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: qso-mapper
+  namespace: default
+  labels:
+    app: qso-mapper
+spec:
+  type: ClusterIP
+  selector:
+    app: qso-mapper
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80

index.html

@@ -41,6 +41,10 @@
 		 crossorigin=""></script>
 		<script src="leaflet-map.js"></script>
 
+		<script>
+			let ADIF_URL = '';
+		</script>
+
 		<!-- The main code for this application -->
 		<script src="qso-mapper.js"></script>
 	</head>

qso-mapper.js

@@ -45,6 +45,9 @@ function initQsoMapper() {
 	// https://stephenhouser.com/qso-mapper?url=sample/short.adi
 	// https://stephenhouser.com/qso-mapper?url=https://stephenhouser.com/qso-mapper/sample/short.adi
 	var url = getQueryVariable('url');
+	if (ADIF_URL !== null && ADIF_URL !== '') {
+		url = ADIF_URL;
+	}
 	if (url !== null) {
 		disableFileUpload();
 		loadQSOsFromURL(url);

scripts/build.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+if [[ ! -z "$ADIF_URL" ]]; then
+    cp index.html index.html.bak && \
+    sed -e "s,let ADIF_URL = '';,let ADIF_URL = '$ADIF_URL';," \
+        index.html > index.html.tmp && \
+        mv index.html.tmp index.html
+fi
+
+if [[ ! -z "$TITLE" ]]; then
+    cp index.html index.html.bak && \
+    sed -e "s,<title>QSO/ADIF Mapper<\/title>,<title>$TITLE<\/title>," \
+        index.html > index.html.tmp && \
+        mv index.html.tmp index.html
+fi