3x-ui/Dockerfile

# ========================================================
# Stage: Builder
# ========================================================
FROM golang:1.23-alpine AS builder   
# because builder doesn't matter as i've tested recently 

WORKDIR /app
ARG TARGETARCH

RUN apk --no-cache --update add \
  build-base \
  gcc \
  wget \
  unzip

COPY . .

ENV CGO_ENABLED=1
ENV CGO_CFLAGS="-D_LARGEFILE64_SOURCE"
RUN go build -o build/x-ui main.go
RUN ./DockerInit.sh "$TARGETARCH"

# ========================================================
# Stage: Final Image of 3x-ui
# ========================================================
FROM ubuntu:devel
# while being techniacally newer "devel" image proven to be more stable and more lightweight 
ENV TZ=Asia/Tehran
WORKDIR /app

RUN apt-get update -y 
RUN apt-get install -y \
  --no-install-recommends \
# to make image less "bloated" due of way apt works
  ca-certificates \
  tzdata \
  fail2ban \
  bash

COPY --from=builder /app/build/ /app/
COPY --from=builder /app/DockerEntrypoint.sh /app/
COPY --from=builder /app/x-ui.sh /usr/bin/x-ui


# Configure fail2ban
RUN rm -f /etc/fail2ban/jail.d/alpine-ssh.conf \
  && cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local \
  && sed -i "s/^\[ssh\]$/&\nenabled = false/" /etc/fail2ban/jail.local \
  && sed -i "s/^\[sshd\]$/&\nenabled = false/" /etc/fail2ban/jail.local \
  && sed -i "s/#allowipv6 = auto/allowipv6 = auto/g" /etc/fail2ban/fail2ban.conf

RUN chmod +x \
  /app/DockerEntrypoint.sh \
  /app/x-ui \
  /usr/bin/x-ui

VOLUME [ "/etc/x-ui" ]
CMD [ "./x-ui" ]
ENTRYPOINT [ "/app/DockerEntrypoint.sh" ]