Dockerfile

# Install Operating system and dependencies
FROM ubuntu:20.04 AS build

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update
RUN apt-get install -y curl git wget unzip libgconf-2-4 gdb libstdc++6 libglu1-mesa fonts-droid-fallback python3
RUN apt-get clean

ENV DEBIAN_FRONTEND=dialog

# download Flutter SDK from Flutter Github repo
RUN git clone https://github.com/flutter/flutter.git /usr/local/flutter

# Set flutter environment path
ENV PATH="/usr/local/flutter/bin:/usr/local/flutter/bin/cache/dart-sdk/bin:${PATH}"

# Run flutter doctor
RUN flutter doctor

# Enable flutter web
RUN flutter channel stable
RUN flutter upgrade
RUN flutter config --enable-web

# Copy files to container and build
RUN mkdir /app/
COPY . /app/
WORKDIR /app/
RUN dart run build_runner build -d
RUN flutter build web --web-renderer html

FROM socialengine/nginx-spa:latest
COPY --chown=nginx:nginx --from=build /app/build/web /app
EXPOSE 80