Docker dev server

Dockerfile

@@ -0,0 +1,14 @@
+FROM python:3
+ENV EMSCRIPTEN_VERSION=2.0.34
+RUN pip3 install scons
+WORKDIR /emscripten
+RUN curl -L https://github.com/emscripten-core/emsdk/archive/refs/tags/${EMSCRIPTEN_VERSION}.tar.gz | tar --strip-components=1 -xvzf - && \
+    ./emsdk install ${EMSCRIPTEN_VERSION} && \
+    ./emsdk activate ${EMSCRIPTEN_VERSION}
+WORKDIR /build
+COPY . /build
+RUN cd /emscripten && . /emscripten/emsdk_env.sh && cd /build && make js
+
+FROM nginx:alpine
+COPY --from=0 /build/apps/ /usr/share/nginx/html/
+COPY --from=0 /build/build/ /usr/share/nginx/html/build/

README.md

@@ -33,6 +33,21 @@ You need to make sure you have both emscripten and sconstruct installed.
 
     # Now see apps/simple-html/ to try the library in a browser.
 
+Build the Docker version
+------------------------
+
+A `Dockerfile` is included that allows you to quickly build a functional
+web engine for further development.
+
+    # compile the current source code
+    docker build -t webengine .
+
+    # run the web engine in a web server
+    docker run -it --rm -p 8080:80 webengine
+
+Once running, browse to http://localhost:8080/simple-html/stellarium-web-engine.html
+to open the web engine
+
 
 Contributing
 ------------

SConstruct

@@ -15,9 +15,11 @@ VariantDir('build/ext_src', 'ext_src', duplicate=0)
 env = Environment(variables=vars)
 
 env.Append(CFLAGS= '-Wall -std=gnu11 -Wno-unknown-pragmas -D_GNU_SOURCE '
-                   '-Wno-missing-braces',
+                   '-Wno-missing-braces -Wno-unused-command-line-argument',
            CXXFLAGS='-Wall -std=gnu++11 -Wno-narrowing '
-                    '-Wno-unknown-pragmas -Wno-unused-function')
+                    '-Wno-unknown-pragmas -Wno-unused-function '
+                    '-Wno-unused-command-line-argument '
+                    '-Wno-unused-but-set-variable')
 
 if env['werror']:
     env.Append(CCFLAGS='-Werror')

apps/simple-html/stellarium-web-engine.html

@@ -223,7 +223,7 @@ <h3>{{getTitle(stel.core.selection)}}</h3>
 
           // Force ui update when there is any change.
           stel.change(function(obj, attr) {
-            if (attr !== "hovered") {
+            if (attr !== "hovered")
               that.stel = Object.assign(Object.create(stel), {}, stel)
           })