.

.dockerignore

@@ -0,0 +1,8 @@
+*
+
+!.dockerignore
+!VERSION
+!entrypoint.sh
+!install.sh
+!gpgparams
+!Dockerfile

Dockerfile

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+FROM ubuntu:jammy
+
+EXPOSE 25/tcp
+EXPOSE 143/tcp
+
+WORKDIR /protonmail
+
+# Copy bash scripts
+COPY gpgparams install.sh entrypoint.sh VERSION /protonmail/
+
+# Install dependencies and protonmail bridge
+RUN bash install.sh
+
+ENTRYPOINT ["bash", "/protonmail/entrypoint.sh"]

ENV

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+APP_DIR=/mnt/user/appdata/protonmail-bridge-v2

VERSION

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+3.12.0-1

docker-compose.yml

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+services:
+  protonmail-bridge:
+    container_name: protonmail-bridge-v2
+    build: .
+    ports:
+      - 1025:25/tcp
+      - 1143:143/tcp
+    restart: unless-stopped
+    volumes:
+      - ${APP_DIR:?err}/app:/root
+    networks:
+      - main
+
+networks:
+    main:
+        driver: bridge
+        external: true

entrypoint.sh

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+#!/bin/bash
+
+set -ex
+
+# Initialize
+if [[ $1 == init ]]; then
+
+    # # Parse parameters
+    # TFP=""  # Default empty two factor passcode
+    # shift  # skip `init`
+    # while [[ $# -gt 0 ]]; do
+    #     key="$1"
+    #     case $key in
+    #         -u|--username)
+    #         USERNAME="$2"
+    #         ;;
+    #         -p|--password)
+    #         PASSWORD="$2"
+    #         ;;
+    #         -t|--twofactor)
+    #         TWOFACTOR="$2"
+    #         ;;
+    #     esac
+    #     shift
+    #     shift
+    # done
+
+    # Initialize pass
+    gpg --generate-key --batch /protonmail/gpgparams
+    pass init pass-key
+
+    # Login
+    protonmail-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-bridge --cli
+
+fi

gpgparams

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+%no-protection
+%echo Generating a basic OpenPGP key
+Key-Type: RSA
+Key-Length: 2048
+Name-Real: pass-key
+Expire-Date: 0
+%commit
+%echo done

install.sh

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+#!/bin/bash
+
+set -ex
+
+VERSION=`cat VERSION`
+DEB_FILE=protonmail-bridge_${VERSION}_amd64.deb
+
+# Install dependents
+apt-get update
+apt-get install -y --no-install-recommends socat pass ca-certificates
+
+# Build time dependencies
+apt-get install -y wget binutils xz-utils
+
+# Repack deb (remove unnecessary dependencies)
+mkdir deb
+cd deb
+wget -q https://git.lanubya.de/Lanubya/protonmail-bridge-v2/raw/branch/main/${DEB_FILE}
+ar x -v ${DEB_FILE}
+mkdir control
+tar zxvf control.tar.gz -C control
+sed -i "s/^Depends: .*$/Depends: libgl1, libc6, libsecret-1-0, libstdc++6, libgcc1/" control/control
+cd control
+tar zcvf ../control.tar.gz .
+cd ../
+ar rcs -v ${DEB_FILE} debian-binary control.tar.gz data.tar.gz
+cd ../
+
+# Install protonmail bridge
+apt-get install -y --no-install-recommends ./deb/${DEB_FILE}
+
+# Cleanup
+apt-get purge -y wget binutils xz-utils
+apt-get autoremove -y
+rm -rf /var/lib/apt/lists/*
+rm -rf deb