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The idea with multi-stage builds is that I can build the application in one Docker container, and then copy only the production files to a second Docker container.

Recently, I started working on a new project for a customer: deploying C applications using Docker and Kubernetes.

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However, this challenge made me realize that in 24 years of being a professional, I have never actually shipped C or C code on Linux, which I am using for my base container.

So this post documents my journey as I figure out how to deploy on a platform that I know, yet I have never shipped working code on.

My Goal My goal is to build a great set of demonstrations to show my customer how to use Docker and Kubernetes to deploy their code.

I intend to do this by building complementary demos that keep building upon each other.

These demos wont be simple Hello, World programs (well, the first one will be).

I want them to do significant work like call a database and make network calls.

My outline for these demos looks like this: Build a base build container.

Build a micro service in Docker that uses gRPC and PostgreSQL.

Create a GraphQL service that uses the gRPC service to query or mutate data.

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My Tools To build this series of demos, I am using the following tools for development: MacBook Pro or iMac using macOS High Sierra Docker for Mac Edge edition with Kubernetes Support Jetbrains CLion as my IDE CMake My C Background Before I get too far into this post or series of posts, let me review my history of C programming.

I began with Borlands developer tool set, writing C programs for MS-DOS and later Windows.

When I later started working professionally, I learned to write Windows programs using C and Microsofts MFC library.

I wrote many C Windows applications and continued using it primarily until late 2000 when I made the switch to C and the.NET Framework.

While I had a fair amount of experience with C earlier in my career, and I have somewhat kept up skills, I wouldnt consider myself as much of a C expert as I used to be.

I have used C and C from time-to-time, even in the.NET world, to accomplish tasks that I couldnt do exclusively with Java or C.NET.

Also, as I mentioned, the bulk of my development experience with C has been on Windows.

I have never actually released a C or C program that was deployed or installed to Linux.

All that being said, Im not quite as caught up in C as I used to be.

Ill do my best to make sure that Im following the right practices and patterns.

If youre a C expert and see something that Im doing wrong, dont hesitate to point it out to me in the comments.

About Multi-Stage Builds In this post and series, I will show you how to make use of Dockers new multi-stage build support.

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Multi-stage builds are fantastic when developing production software, especially software that is not open source.

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