Dockerfile

FROM oven/bun:1-alpine AS build

WORKDIR /app

# Copy package files
COPY package.json tsconfig.json ./
COPY src ./src

# Install dependencies and build
RUN bun install --frozen-lockfile && \
    bun build src/index.ts --compile --outfile postgres-backup

# Final stage
FROM alpine:latest
LABEL maintainer="johnnybui"
LABEL description="Postgres backup to S3/R2/S3-compatible storage with multiple database support"

# Install runtime dependencies
RUN apk update && \
    apk upgrade && \
    apk add --no-cache \
        bash \
        coreutils \
        postgresql17-client \
        aws-cli \
        openssl \
        pigz \
        ca-certificates \
        curl && \
    rm -rf /var/cache/apk/*

# Copy compiled binary from build stage
COPY --from=build /app/postgres-backup /usr/local/bin/postgres-backup

# Copy shell scripts
COPY backup.sh /backup.sh
COPY restore.sh /restore.sh
COPY run.sh /run.sh

RUN chmod +x /backup.sh /restore.sh /run.sh /usr/local/bin/postgres-backup

# Environment variables with defaults
ENV POSTGRES_DATABASE=**None**
ENV POSTGRES_HOST=**None**
ENV POSTGRES_PORT=5432
ENV POSTGRES_USER=**None**
ENV POSTGRES_PASSWORD=**None**
ENV POSTGRES_EXTRA_OPTS=''

ENV STORAGE_TYPE=S3
ENV S3_ACCESS_KEY_ID=**None**
ENV S3_SECRET_ACCESS_KEY=**None**
ENV S3_BUCKET=**None**
ENV S3_REGION=us-west-1
ENV S3_PREFIX=backup
ENV S3_ENDPOINT=**None**
ENV S3_S3V4=no

ENV R2_ACCOUNT_ID=**None**

ENV SCHEDULE=**None**
ENV PARALLEL_BACKUP=no
ENV ENCRYPTION_PASSWORD=**None**
ENV DELETE_OLDER_THAN=**None**

ENV BACKUP_FILE=**None**
ENV CREATE_DATABASE=no
ENV DROP_DATABASE=no

ENV USE_CUSTOM_FORMAT=no
ENV COMPRESSION_CMD=gzip
ENV DECOMPRESSION_CMD='gunzip -c'
ENV PARALLEL_JOBS=1

WORKDIR /

CMD ["sh", "/run.sh"]