Add start script & option for config template

.gitignore

@@ -18,3 +18,4 @@ src/main/webapp/*
 !src/main/webapp/WEB-INF/
 
 .idea/
+.vscode

Dockerfile

@@ -12,14 +12,21 @@ RUN ./build.sh nl && mv build /www/nl
 # Let root redirect to the english version
 RUN cp /webapp/redirect-en.html /www/index.html
 
-FROM gradle:7.6-jdk11 as javabuild
+# --------------------------------------------------------
+
+FROM gradle:7.6-jdk11 AS javabuild
 
 # Build the java app
 COPY ./ /app/
 WORKDIR /app
 RUN gradle build
 
+# --------------------------------------------------------
+
 FROM tomee:9.1-jre11
+RUN apt-get update && apt-get install gettext-base
+
+WORKDIR /server
 
 # Copy the webapp to the webapps directory
 RUN rm -rf /usr/local/tomee/webapps/*
@@ -32,12 +39,13 @@ COPY --from=javabuild /app/build/libs/irma_email_issuer.war /usr/local/tomee/web
 COPY ./src/main/resources/email-en.html /email-templates/email-en.html
 COPY ./src/main/resources/email-nl.html /email-templates/email-nl.html
 
+COPY --from=javabuild /app/start.sh ./start.sh
+RUN chmod +x ./start.sh
 
 RUN mkdir /usr/local/keys
-
-ENV IRMA_CONF="/config/"
+RUN mkdir /irma-config
+ENV IRMA_CONF="/irma-config/"
 ENV EMAIL_TEMPLATE_DIR="/email-templates/"
 EXPOSE 8080
 
-# Copy the config file to the webapp. This is done at runtime so that the config file can be mounted as a volume.
-CMD [ "/bin/sh", "-c", "openssl rsa -in /irma-jwt-key/priv.pem -outform der -out /usr/local/keys/priv.der && for lang in 'en' 'nl'; do cp /config/config.js /usr/local/tomee/webapps/ROOT/$lang/assets/config.js; done && exec catalina.sh run" ]
+CMD [ "/bin/sh", "-C", "./start.sh" ]

start.sh

@@ -0,0 +1,22 @@
+# this is the startup script in the docker container,
+# doing a bunch of config at runtime before starting the actual server
+
+set -e # exit the script immediately when an error is encountered
+
+# in some cases secrets from different places might be required to be used together
+# so this provides the option to provide a config template with some environment variables
+echo "creating config.json based on template"
+envsubst < /config/config.json > /tmp/conf.json
+cp /tmp/conf.json $IRMA_CONF/config.json
+
+echo "generating binary file for private key"
+openssl rsa -in /irma-jwt-key/priv.pem -outform der -out /usr/local/keys/priv.der
+
+echo "copying config files to web app dir"
+for lang in 'en' 'nl'; do
+    cp /config/config.js /usr/local/tomee/webapps/ROOT/$lang/assets/config.js;
+done
+
+
+echo "starting up server"
+exec catalina.sh run