h2 and HTTPS support

Dockerfile.h2-proxy

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+FROM alpine:latest
+
+RUN apk add --no-cache openssl
+
+# Use this self-generated certificate only in dev, IT IS NOT SECURE!
+RUN openssl genrsa -des3 -passout pass:NotSecure -out server.pass.key 2048
+RUN openssl rsa -passin pass:NotSecure -in server.pass.key -out server.key
+RUN rm server.pass.key
+RUN openssl req -new -passout pass:NotSecure -key server.key -out server.csr \
+    -subj '/C=SS/ST=SS/L=Gotham City/O=Symfony/CN=localhost'
+RUN openssl x509 -req -sha256 -days 365 -in server.csr -signkey server.key -out server.crt
+
+FROM httpd:2.4-alpine
+
+COPY --from=0 server.key /usr/local/apache2/conf/server.key
+COPY --from=0 server.crt /usr/local/apache2/conf/server.crt
+COPY ./docker/httpd/httpd.conf /usr/local/apache2/conf/httpd.conf