dockerfile.example

# Dockerfile References: https://docs.docker.com/engine/reference/builder/

############################################ MULTI STAGE BUILD PART 1 ##############################################

# Start from golang v1.17 base image
FROM golang:1.17 as builder

# Creating/Cd work directory
WORKDIR /app

# Copying sources
COPY . .

# Run go build
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 /usr/local/go/bin/go build -ldflags="-s -w" -o /app/pack-and-go-api .

# Add wait-for-it tool
ADD https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh /app/wait-for-it
RUN chmod +x /app/wait-for-it

############################################ MULTI STAGE BUILD PART 2 ##############################################

# Using bash
FROM bash

# Copying executable
COPY --from=builder /app/pack-and-go-api .
COPY --from=builder /app/.env .
COPY --from=builder /app/wait-for-it .

CMD /app/wait-for-it database:5432 -- /app/pack-and-go-api