Step-by-step guides to the developer tools teams actually deploy — Docker, Git, Terraform, Kubernetes and more. Each guide starts with the problem the tool solves, not with its command line flags.https://devtoolsdk.com/en-us© 2026 DevToolSDKhttps://devtoolsdk.com/guides/docker/introduction/https://devtoolsdk.com/guides/docker/introduction/Before any installation, understand the problem Docker was built for. Once you see why "works on my machine" happens, every design decision in Docker stops looking arbitrary.Sun, 20 Sep 2026 00:00:00 GMTContainersdockercontainersfundamentalsThe DevToolSDK Teamhttps://devtoolsdk.com/guides/docker/installation/https://devtoolsdk.com/guides/docker/installation/Install Docker on macOS, Linux or Windows, then run the three commands that verify the daemon, the networking and the filesystem all work — before you waste time debugging a broken install.Sun, 20 Sep 2026 00:00:00 GMTContainersdockerinstallationsetupThe DevToolSDK Teamhttps://devtoolsdk.com/guides/docker/core-concepts/https://devtoolsdk.com/guides/docker/core-concepts/Images, containers, volumes and networks. Learn these four and the rest of Docker becomes predictable — including the commands you have not read about yet.Sun, 20 Sep 2026 00:00:00 GMTContainersdockerconceptsimagesvolumesThe DevToolSDK Teamhttps://devtoolsdk.com/guides/docker/first-project/https://devtoolsdk.com/guides/docker/first-project/Containerise a working Node API from scratch. Every instruction is explained, and the final image is one you would actually be willing to deploy.Sun, 20 Sep 2026 00:00:00 GMTContainersdockerdockerfiletutorialThe DevToolSDK Teamhttps://devtoolsdk.com/guides/docker/everyday-workflow/https://devtoolsdk.com/guides/docker/everyday-workflow/Docker has hundreds of flags and you need about fifteen. Here is the working set, plus the Compose file that replaces most of them during development.Sun, 20 Sep 2026 00:00:00 GMTContainersdockerclicomposeworkflowThe DevToolSDK Teamhttps://devtoolsdk.com/guides/docker/common-mistakes/https://devtoolsdk.com/guides/docker/common-mistakes/Every one of these has cost a real team real hours. They are not exotic — they are the default behaviours of Docker meeting reasonable assumptions that happen to be wrong.Sun, 20 Sep 2026 00:00:00 GMTContainersdockermistakesdebuggingsecurityThe DevToolSDK Teamhttps://devtoolsdk.com/guides/docker/troubleshooting/https://devtoolsdk.com/guides/docker/troubleshooting/A repeatable order for debugging Docker problems, and what the most common error messages actually mean, rather than what they appear to say.Sun, 20 Sep 2026 00:00:00 GMTContainersdockertroubleshootingdebuggingThe DevToolSDK Teamhttps://devtoolsdk.com/guides/git/introduction/https://devtoolsdk.com/guides/git/introduction/Git is not hard because the commands are hard. It is hard because almost nobody explains what a commit actually is. Ten minutes on the data model saves you years of cargo-culting.Sun, 20 Sep 2026 00:00:00 GMTVersion Controlgitversion-controlfundamentalsThe DevToolSDK Teamhttps://devtoolsdk.com/guides/git/installation/https://devtoolsdk.com/guides/git/installation/Install Git, then spend five minutes on the configuration that prevents a surprising share of the problems people hit later — line endings, default branch, editor, and safe defaults for pull.Sun, 20 Sep 2026 00:00:00 GMTVersion ControlgitinstallationconfigurationThe DevToolSDK Teamhttps://devtoolsdk.com/guides/git/core-concepts/https://devtoolsdk.com/guides/git/core-concepts/Branching, merging and rebasing explained as what they are — operations on a directed graph of snapshots. With that picture, choosing between merge and rebase becomes obvious.Sun, 20 Sep 2026 00:00:00 GMTVersion ControlgitbranchingmergerebaseThe DevToolSDK Teamhttps://devtoolsdk.com/guides/git/first-project/https://devtoolsdk.com/guides/git/first-project/Work through one complete feature the way it happens on a real team — branch, commit, rebase, push, review, merge — with the graph state shown at each step.Sun, 20 Sep 2026 00:00:00 GMTVersion ControlgittutorialworkflowgithubThe DevToolSDK Teamhttps://devtoolsdk.com/guides/git/everyday-workflow/https://devtoolsdk.com/guides/git/everyday-workflow/The working set of Git commands, grouped by what you are trying to do rather than alphabetically, with the ones worth learning properly flagged.Sun, 20 Sep 2026 00:00:00 GMTVersion ControlgitcliworkflowThe DevToolSDK Teamhttps://devtoolsdk.com/guides/git/common-mistakes/https://devtoolsdk.com/guides/git/common-mistakes/Committing secrets, force-pushing over a colleague, detached HEAD, giant binaries. What causes each one, how to get out of it, and how to stop it happening again.Sun, 20 Sep 2026 00:00:00 GMTVersion ControlgitmistakesrecoverysecurityThe DevToolSDK Teamhttps://devtoolsdk.com/guides/git/troubleshooting/https://devtoolsdk.com/guides/git/troubleshooting/A lookup table for "I am in a bad state and do not know how I got here", plus the three commands that recover almost anything.Sun, 20 Sep 2026 00:00:00 GMTVersion ControlgitrecoverytroubleshootingThe DevToolSDK Teamhttps://devtoolsdk.com/guides/kubernetes/introduction/https://devtoolsdk.com/guides/kubernetes/introduction/Kubernetes looks like a thousand YAML fields. It is really one idea — the reconciliation loop — applied consistently. Learn that first and the YAML stops being arbitrary.Sun, 20 Sep 2026 00:00:00 GMTOrchestrationkubernetesk8sfundamentalsorchestrationThe DevToolSDK Teamhttps://devtoolsdk.com/guides/kubernetes/installation/https://devtoolsdk.com/guides/kubernetes/installation/Get a real Kubernetes cluster running locally in under five minutes, install kubectl, and set up the two tools that make working with it bearable.Sun, 20 Sep 2026 00:00:00 GMTOrchestrationkuberneteskubectlkindsetupThe DevToolSDK Teamhttps://devtoolsdk.com/guides/kubernetes/core-concepts/https://devtoolsdk.com/guides/kubernetes/core-concepts/Pod, Deployment, Service, Ingress, ConfigMap and Secret. Six objects cover almost everything — learn what each one reconciles and the rest of the API becomes guessable.Sun, 20 Sep 2026 00:00:00 GMTOrchestrationkubernetespodsdeploymentsservicesThe DevToolSDK Teamhttps://devtoolsdk.com/guides/kubernetes/first-project/https://devtoolsdk.com/guides/kubernetes/first-project/Take an application from a container image to something reachable in a browser — Deployment, Service, Ingress, configuration, probes and a rolling update.Sun, 20 Sep 2026 00:00:00 GMTOrchestrationkubernetestutorialdeploymentingressThe DevToolSDK Teamhttps://devtoolsdk.com/guides/kubernetes/everyday-workflow/https://devtoolsdk.com/guides/kubernetes/everyday-workflow/The kubectl subset you will actually use, the output formats that make it useful, and how Kustomize and Helm fit in once raw YAML stops scaling.Sun, 20 Sep 2026 00:00:00 GMTOrchestrationkuberneteskubectlhelmkustomizeThe DevToolSDK Teamhttps://devtoolsdk.com/guides/kubernetes/common-mistakes/https://devtoolsdk.com/guides/kubernetes/common-mistakes/Missing resource requests, liveness probes that cascade, latest tags, and the label mismatch that silently routes traffic nowhere.Sun, 20 Sep 2026 00:00:00 GMTOrchestrationkubernetesmistakesreliabilityproductionThe DevToolSDK Teamhttps://devtoolsdk.com/guides/kubernetes/troubleshooting/https://devtoolsdk.com/guides/kubernetes/troubleshooting/A diagnostic path for the states you will actually meet — Pending, CrashLoopBackOff, ImagePullBackOff, OOMKilled — and what each one is really telling you.Sun, 20 Sep 2026 00:00:00 GMTOrchestrationkubernetestroubleshootingdebuggingpodsThe DevToolSDK Teamhttps://devtoolsdk.com/guides/terraform/introduction/https://devtoolsdk.com/guides/terraform/introduction/Infrastructure as code, declarative state, and the plan step that makes Terraform worth learning. Start with why clicking in a cloud console does not scale.Sun, 20 Sep 2026 00:00:00 GMTInfrastructure as CodeterraformiacfundamentalsThe DevToolSDK Teamhttps://devtoolsdk.com/guides/terraform/installation/https://devtoolsdk.com/guides/terraform/installation/Install the CLI, authenticate to a cloud provider without putting keys in your code, and verify the whole chain works before you write a single resource.Sun, 20 Sep 2026 00:00:00 GMTInfrastructure as CodeterraforminstallationawscredentialsThe DevToolSDK Teamhttps://devtoolsdk.com/guides/terraform/core-concepts/https://devtoolsdk.com/guides/terraform/core-concepts/The five concepts Terraform is built from — providers, resources, state, variables and modules — plus the dependency graph that decides the order everything happens in.Sun, 20 Sep 2026 00:00:00 GMTInfrastructure as CodeterraformstatehclmodulesThe DevToolSDK Teamhttps://devtoolsdk.com/guides/terraform/first-project/https://devtoolsdk.com/guides/terraform/first-project/Build a real static website on AWS — bucket, policy, CloudFront — structured the way a project should be from the start, with variables, outputs and remote state.Sun, 20 Sep 2026 00:00:00 GMTInfrastructure as Codeterraformawstutorials3The DevToolSDK Teamhttps://devtoolsdk.com/guides/terraform/everyday-workflow/https://devtoolsdk.com/guides/terraform/everyday-workflow/The commands you will run daily, how to structure multiple environments without copy-paste, and what a sane CI pipeline for infrastructure looks like.Sun, 20 Sep 2026 00:00:00 GMTInfrastructure as Codeterraformworkflowci-cdmodulesThe DevToolSDK Teamhttps://devtoolsdk.com/guides/terraform/common-mistakes/https://devtoolsdk.com/guides/terraform/common-mistakes/Terraform mistakes are more expensive than most, because the plan you did not read deletes production. Here are the ones that actually happen, and how to make them impossible.Sun, 20 Sep 2026 00:00:00 GMTInfrastructure as CodeterraformmistakesstatesafetyThe DevToolSDK Teamhttps://devtoolsdk.com/guides/terraform/troubleshooting/https://devtoolsdk.com/guides/terraform/troubleshooting/Locked state, resources that already exist, cycles in the graph, and plans that will not converge. What each error actually means and the safe way out.Sun, 20 Sep 2026 00:00:00 GMTInfrastructure as CodeterraformtroubleshootingstatedebuggingThe DevToolSDK Teamhttps://devtoolsdk.com/articles/how-to-learn-a-new-tool/https://devtoolsdk.com/articles/how-to-learn-a-new-tool/The order that works, and why starting with the quickstart is usually a mistake. A method drawn from writing these guides, and from getting it wrong first.Fri, 18 Sep 2026 00:00:00 GMTLearninglearningdeveloper-toolsmethodThe DevToolSDK Teamhttps://devtoolsdk.com/articles/hidden-costs-of-managed-platforms/https://devtoolsdk.com/articles/hidden-costs-of-managed-platforms/Every managed platform quotes a headline price that is accurate and incomplete. We went through a year of real invoices across six vendors and catalogued the line items that show up after you have already migrated.Thu, 20 Aug 2026 00:00:00 GMTCost Engineeringpricingcloud-costsfinopsplatformsThe DevToolSDK Teamhttps://devtoolsdk.com/articles/when-to-migrate-and-when-to-stay/https://devtoolsdk.com/articles/when-to-migrate-and-when-to-stay/A better tool is not a reason to migrate. We use four questions to decide whether a stack change is worth the disruption, and they have talked us out of more migrations than into them.Fri, 24 Jul 2026 00:00:00 GMTEngineering Strategymigrationarchitecturedecision-makingstrategyThe DevToolSDK Team