diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
new file mode 100644
index 00000000..8e6955ca
--- /dev/null
+++ b/.devcontainer/Dockerfile
@@ -0,0 +1,8 @@
+ARG JAVA_VERSION=8
+FROM eclipse-temurin:${JAVA_VERSION}-jdk-jammy
+
+RUN groupadd --gid 1000 vscode \
+    && useradd --uid 1000 --gid 1000 --create-home --shell /bin/bash vscode \
+    && apt-get update \
+    && apt-get install -y --no-install-recommends curl git openssh-client \
+    && rm -rf /var/lib/apt/lists/*
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 00000000..0d14d04f
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,20 @@
+{
+  "name": "contentful.java",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": "..",
+    "args": {
+      "JAVA_VERSION": "${localEnv:JAVA_VERSION:8}"
+    }
+  },
+  "workspaceFolder": "/workspaces/${localWorkspaceFolderBasename}",
+  "remoteUser": "vscode",
+  "postCreateCommand": "./mvnw -B -q -DskipTests dependency:go-offline",
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "redhat.java"
+      ]
+    }
+  }
+}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..b356adab
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Test (Java 8)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install devcontainer CLI
+        run: npm install -g @devcontainers/cli@0
+
+      - name: Run tests in dev container
+        env:
+          JAVA_VERSION: "8"
+        run: |
+          devcontainer up --workspace-folder .
+          devcontainer exec --workspace-folder . bash -lc "./mvnw -B test"
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
deleted file mode 100644
index de95c079..00000000
--- a/.github/workflows/codeql.yml
+++ /dev/null
@@ -1,32 +0,0 @@
----
-name: "CodeQL Scan for GitHub Actions Workflows"
-
-on:
-  push:
-    branches: [master]
-    paths: [".github/workflows/**"]
-  pull_request:
-    branches: [master]
-    paths: [".github/workflows/**"]
-
-jobs:
-  analyze:
-    name: Analyze GitHub Actions workflows
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
-        with:
-          languages: actions
-
-      - name: Run CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
-        with:
-          category: actions
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 4e1d45dd..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-sudo: false
-language: java
-
-dist: trusty
-
-jdk:
-  - oraclejdk8
-  - openjdk8
-
-script:
-  - mvn jacoco:prepare-agent test jacoco:report
-
-after_success:
-  - .buildscript/deploy_snapshot.sh
-  - .buildscript/integration_tests.sh
-
-env:
-  global:
-    - secure: ZkYu76rxDUUgoUSIz12CReNZHd2c5O2LBWCHnuQpqfJfcCXBr1J24F7WftiFXH+9Od43qHdF4hQ9Vy0vWEHSJ1hxZnCIy5yYsvqV4GJ94DIJhvNqmo48QPkA3tFUsqd48rEeBXMUsON30m89KDp1se2+l3UJaX+R27RUi47nraU=
-    - secure: jKXD1hYVgJypaQHRSm4gshxMhB+T+UibaLDLCSfGWSaGzogDsWnPXf9qqG3jtozKHyH0BkANaaO6rRgNQNfbaklm4jopL1bdRkd47JO/nibNwuVcG07TQyCPQR6jv/WoRAkxXOGdMSwwS2+puM7FJqLarbzY7uBEJtNsZn5JT48=
-    - secure: k2FkpJUg0FxfTeTadPc4xDA7xPmheZg6+u4DLn7kRP3bfHNG8lP57pYq/b1iDN+3VBXOkQtGttUyS1EExUubmeoQk4JwOUuePv6Ru24Mi5YoEdlkBzu2KZXV0o7aZZookYdsQTOQ/Jd576sn3oiXbAtW6n93h7h6SRCFIAG/nmc=
-
-
-branches:
-  except:
-    - gh-pages
-
-notifications:
-  slack:
-    - secure: Wq9lfTl+SSlfe+4OSLIINsUJZKEN0jYC07nI6PL1Sv4wZCUHmkvXNvsDj+0QLYkKkdEao2Yg3CLHSU5GdvZ2eQpY1mut6i+DxUHnICDQp6liS73UfW3KZIw7zkAMrlXYgVKtIUCUVjZFVyZ7AOxdt8Z6y5oKuXQiGC6h8vmi2Qk=
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 00000000..448f9772
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,32 @@
+# Contributing
+
+Thanks for helping improve `contentful.java`.
+
+## Development with Dev Containers
+
+This repository includes a `.devcontainer` configuration for a reproducible local setup. GitHub Actions uses the same devcontainer configuration for CI.
+
+### Visual Studio Code
+
+Open the repository in Visual Studio Code, install the Dev Containers extension if needed, then run `Dev Containers: Reopen in Container`. Wait for the container build and post-create setup to finish.
+
+### Terminal or other editors
+
+Install Docker and the Dev Container CLI (`npm install -g @devcontainers/cli`). From the repository root, run:
+
+```bash
+devcontainer up --workspace-folder .
+devcontainer exec --workspace-folder . bash
+```
+
+### Verify the environment
+
+```bash
+./mvnw -B test
+```
+
+## Pull Requests
+
+1. Fork the repository and create a branch for your change.
+2. Run the relevant checks from the dev container.
+3. Open a pull request with a short summary of the change and any follow-up context.
diff --git a/README.md b/README.md
index 61083b17..f7cf6313 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@
 
 contentful.java - Contentful Java Delivery Library
 ==================================================
-[![Build Status](https://travis-ci.org/contentful/contentful.java.svg)](https://travis-ci.org/contentful/contentful.java/builds#)
+[![CI](https://github.com/contentful/contentful.java/actions/workflows/ci.yml/badge.svg)](https://github.com/contentful/contentful.java/actions/workflows/ci.yml)
 
 > Java library for [Content Delivery API](https://www.contentful.com/developers/docs/references/content-delivery-api/) and [Content Preview API](https://www.contentful.com/developers/docs/references/content-preview-api/). It helps in easily accessing the content stored in Contentful using Java applications.
 
@@ -513,6 +513,16 @@ Getting involved
 
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?maxAge=31557600)](http://makeapullrequest.com)
 
+For a reproducible local setup, open this repository in its included dev container. The container installs the project dependencies automatically when it is created.
+
+After the container is ready, run:
+
+```bash
+./mvnw -B test
+```
+
+See [CONTRIBUTING.md](CONTRIBUTING.md) for the full contributor workflow.
+
 Code of Conduct
 ===============