Add build from source

build/.dockerignore

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+*
+
+!.dockerignore
+!VERSION
+!entrypoint.sh
+!gpgparams
+!Dockerfile
+!build.sh

build/Dockerfile

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+FROM golang:1.13 AS build
+
+# Install dependencies
+RUN apt-get update && apt-get install -y libsecret-1-dev
+
+# Build
+WORKDIR /build/
+COPY build.sh VERSION /build/
+RUN bash build.sh
+
+FROM ubuntu:20.04
+LABEL maintainer="Xiaonan Shen <s@sxn.dev>"
+
+EXPOSE 25/tcp
+EXPOSE 143/tcp
+
+# Install dependencies and protonmail bridge
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends socat pass libsecret-1-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy bash scripts
+COPY gpgparams entrypoint.sh /protonmail/
+
+# Copy protonmail
+COPY --from=build /build/proton-bridge/Desktop-Bridge /protonmail/
+
+ENTRYPOINT ["bash", "/protonmail/entrypoint.sh"]

build/VERSION

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+v1.2.7-live.1

build/build.sh

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+#!/bin/bash
+
+set -ex
+
+VERSION=`cat VERSION`
+
+# Clone new code
+git clone https://github.com/ProtonMail/proton-bridge.git
+cd proton-bridge
+git checkout $VERSION
+
+# Enable debug log
+sed -i "s/build desktop/-debug build desktop/" Makefile
+
+# Build
+make build-nogui

build/entrypoint.sh

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+#!/bin/bash
+
+set -ex
+
+# Initialize
+if [[ $1 == init ]]; then
+
+    # Initialize pass
+    gpg --generate-key --batch /protonmail/gpgparams
+    pass init pass-key
+
+    # Login
+    /protonmail/Desktop-Bridge --cli
+
+else
+
+    # socat will make the conn appear to come from 127.0.0.1
+    # ProtonMail Bridge currently expects that.
+    # It also allows us to bind to the real ports :)
+    socat TCP-LISTEN:25,fork TCP:127.0.0.1:1025 &
+    socat TCP-LISTEN:143,fork TCP:127.0.0.1:1143 &
+
+    # Start protonmail
+    # Fake a terminal, so it does not quit because of EOF...
+    rm -f faketty
+    mkfifo faketty
+    cat faketty | /protonmail/Desktop-Bridge --cli
+
+fi