Fix background running

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

Dockerfile

@@ -6,7 +6,7 @@ WORKDIR /build/
 
 RUN git clone --depth 1 --branch v3.9.1 https://github.com/ProtonMail/proton-bridge.git
 WORKDIR /build/proton-bridge
-RUN sed -i 's/127.0.0.1/0.0.0.0/g' internal/constants/constants.go
+RUN find . -type f -exec sed -i 's/127.0.0.1/0.0.0.0/g' {} +
 
 RUN make build-nogui
 
@@ -16,7 +16,7 @@ EXPOSE 25/tcp
 EXPOSE 143/tcp
 
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends pass libsecret-1-0 ca-certificates \
+    && apt-get install -y --no-install-recommends pass socat libsecret-1-0 ca-certificates \
     && rm -rf /var/lib/apt/lists/*
 
 COPY gpgparams entrypoint.sh /protonmail/