diff --git a/.drone.jsonnet b/.drone.jsonnet
new file mode 100644
index 0000000000..dc81115ce9
--- /dev/null
+++ b/.drone.jsonnet
@@ -0,0 +1,88 @@
+local docker_base = 'registry.oxen.rocks/lokinet-ci-';
+
+// Log a bunch of version information to make it easier for debugging
+local version_info = {
+  name: 'Version Information',
+  image: docker_base + 'android',
+  commands: [
+    'cmake --version',
+    'apt --installed list'
+  ]
+};
+
+
+// Intentionally doing a depth of 2 as libSession-util has it's own submodules (and libLokinet likely will as well)
+local clone_submodules = {
+  name: 'Clone Submodules',
+  image: 'drone/git',
+  commands: ['git fetch --tags', 'git submodule update --init --recursive --depth=2 --jobs=4']
+};
+
+// cmake options for static deps mirror
+local ci_dep_mirror(want_mirror) = (if want_mirror then ' -DLOCAL_MIRROR=https://oxen.rocks/deps ' else '');
+
+[
+  // Unit tests (PRs only)
+  {
+    kind: 'pipeline',
+    type: 'docker',
+    name: 'Unit Tests',
+    platform: { arch: 'amd64' },
+    trigger: { event: { exclude: [ 'push' ] } },
+    steps: [
+      version_info,
+      clone_submodules,
+      {
+        name: 'Run Unit Tests',
+        image: docker_base + 'android',
+        pull: 'always',
+        environment: { ANDROID_HOME: '/usr/lib/android-sdk' },
+        commands: [
+          'apt-get install -y ninja-build',
+          './gradlew testPlayDebugUnitTestCoverageReport'
+        ],
+      }
+    ],
+  },
+  // Validate build artifact was created by the direct branch push (PRs only)
+  {
+    kind: 'pipeline',
+    type: 'docker',
+    name: 'Check Build Artifact Existence',
+    platform: { arch: 'amd64' },
+    trigger: { event: { exclude: [ 'push' ] } },
+    steps: [
+      {
+        name: 'Poll for build artifact existence',
+        image: docker_base + 'android',
+        pull: 'always',
+        commands: [
+          './scripts/drone-upload-exists.sh'
+        ]
+      }
+    ]
+  },
+  // Debug APK build (non-PRs only)
+  {
+    kind: 'pipeline',
+    type: 'docker',
+    name: 'Debug APK Build',
+    platform: { arch: 'amd64' },
+    trigger: { event: { exclude: [ 'pull_request' ] } },
+    steps: [
+      version_info,
+      clone_submodules,
+      {
+        name: 'Build and upload',
+        image: docker_base + 'android',
+        pull: 'always',
+        environment: { SSH_KEY: { from_secret: 'SSH_KEY' }, ANDROID_HOME: '/usr/lib/android-sdk' },
+        commands: [
+          'apt-get install -y ninja-build',
+          './gradlew assemblePlayDebug',
+          './scripts/drone-static-upload.sh'
+        ],
+      }
+    ],
+  }
+]
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 023fc81010..be928b3933 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,4 +16,7 @@ ffpr
 *.sh
 pkcs11.password
 app/play
-app/huawei
\ No newline at end of file
+app/huawei
+
+!/scripts/drone-static-upload.sh
+!/scripts/drone-upload-exists.sh
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 70ed8efa38..5002756607 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -124,6 +124,7 @@ android {
         debug {
             isDefault true
             minifyEnabled false
+            enableUnitTestCoverage true
         }
     }
 
@@ -201,6 +202,27 @@ android {
             }
         }
     }
+
+    task testPlayDebugUnitTestCoverageReport(type: JacocoReport, dependsOn: "testPlayDebugUnitTest") {
+        reports {
+            xml.enabled = true
+        }
+
+        // Add files that should not be listed in the report (e.g. generated Files from dagger)
+        def fileFilter = []
+        def mainSrc = "$projectDir/src/main/java"
+        def kotlinDebugTree = fileTree(dir: "${buildDir}/tmp/kotlin-classes/playDebug", excludes: fileFilter)
+
+        // Compiled Kotlin class files are written into build-variant-specific subdirectories of 'build/tmp/kotlin-classes'.
+        classDirectories.from = files([kotlinDebugTree])
+
+        // To produce an accurate report, the bytecode is mapped back to the original source code.
+        sourceDirectories.from = files([mainSrc])
+
+        // Execution data generated when running the tests against classes instrumented by the JaCoCo agent.
+        // This is enabled with 'enableUnitTestCoverage' in the 'debug' build type.
+        executionData.from = "${project.buildDir}/outputs/unit_test_code_coverage/playDebugUnitTest/testPlayDebugUnitTest.exec"
+    }
 }
 
 dependencies {
diff --git a/app/src/test/java/org/thoughtcrime/securesms/conversation/v2/ConversationViewModelTest.kt b/app/src/test/java/org/thoughtcrime/securesms/conversation/v2/ConversationViewModelTest.kt
index aecbd7e4a8..b89c62b6d5 100644
--- a/app/src/test/java/org/thoughtcrime/securesms/conversation/v2/ConversationViewModelTest.kt
+++ b/app/src/test/java/org/thoughtcrime/securesms/conversation/v2/ConversationViewModelTest.kt
@@ -10,6 +10,7 @@ import org.hamcrest.CoreMatchers.nullValue
 import org.hamcrest.MatcherAssert.assertThat
 import org.junit.Before
 import org.junit.Test
+import org.mockito.Mockito
 import org.mockito.Mockito.anyLong
 import org.mockito.Mockito.anySet
 import org.mockito.Mockito.verify
@@ -49,7 +50,8 @@ class ConversationViewModelTest: BaseViewModelTest() {
 
         viewModel.saveDraft(draft)
 
-        verify(repository).saveDraft(threadId, draft)
+        // The above is an async process to wait 100ms to give it a chance to complete
+        verify(repository, Mockito.timeout(100).times(1)).saveDraft(threadId, draft)
     }
 
     @Test
diff --git a/libsession-util/build.gradle b/libsession-util/build.gradle
index 935227185f..f368f15eea 100644
--- a/libsession-util/build.gradle
+++ b/libsession-util/build.gradle
@@ -26,7 +26,7 @@ android {
     externalNativeBuild {
         cmake {
             path "src/main/cpp/CMakeLists.txt"
-            version "3.22.1"
+            version "3.22.1+"
         }
     }
     compileOptions {
diff --git a/scripts/drone-static-upload.sh b/scripts/drone-static-upload.sh
new file mode 100755
index 0000000000..b5c9ee83f7
--- /dev/null
+++ b/scripts/drone-static-upload.sh
@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+
+# Script used with Drone CI to upload build artifacts (because specifying all this in
+# .drone.jsonnet is too painful).
+
+set -o errexit
+
+if [ -z "$SSH_KEY" ]; then
+    echo -e "\n\n\n\e[31;1mUnable to upload artifact: SSH_KEY not set\e[0m"
+    # Just warn but don't fail, so that this doesn't trigger a build failure for untrusted builds
+    exit 0
+fi
+
+echo "$SSH_KEY" >ssh_key
+
+set -o xtrace  # Don't start tracing until *after* we write the ssh key
+
+chmod 600 ssh_key
+
+# Define the output paths
+build_dir="app/build/outputs/apk/play/debug"
+target_path="${build_dir}/$(ls ${build_dir} | grep -o 'session-[^[:space:]]*-universal.apk')"
+
+# Validate the paths exist
+if [ ! -d $build_path ]; then
+    echo -e "\n\n\n\e[31;1mExpected a file to upload, found none\e[0m" >&2
+    exit 1
+fi
+
+if [ -n "$DRONE_TAG" ]; then
+    # For a tag build use something like `session-android-v1.2.3-universal`
+    base="session-android-$DRONE_TAG-universal"
+else
+    # Otherwise build a length name from the datetime and commit hash, such as:
+    # session-android-20200522T212342Z-04d7dcc54-universal
+    base="session-android-$(date --date=@$DRONE_BUILD_CREATED +%Y%m%dT%H%M%SZ)-${DRONE_COMMIT:0:9}-universal"
+fi
+
+# Copy over the build products
+mkdir -vp "$base"
+cp -av $target_path "$base"
+
+# tar dat shiz up yo
+archive="$base.tar.xz"
+tar cJvf "$archive" "$base"
+
+upload_to="oxen.rocks/${DRONE_REPO// /_}/${DRONE_BRANCH// /_}"
+
+# sftp doesn't have any equivalent to mkdir -p, so we have to split the above up into a chain of
+# -mkdir a/, -mkdir a/b/, -mkdir a/b/c/, ... commands.  The leading `-` allows the command to fail
+# without error.
+upload_dirs=(${upload_to//\// })
+put_debug=
+mkdirs=
+dir_tmp=""
+for p in "${upload_dirs[@]}"; do
+    dir_tmp="$dir_tmp$p/"
+    mkdirs="$mkdirs
+-mkdir $dir_tmp"
+done
+
+sftp -i ssh_key -b - -o StrictHostKeyChecking=off drone@oxen.rocks <<SFTP
+$mkdirs
+put $archive $upload_to
+$put_debug
+SFTP
+
+set +o xtrace
+
+echo -e "\n\n\n\n\e[32;1mUploaded to https://${upload_to}/${archive}\e[0m\n\n\n"
diff --git a/scripts/drone-upload-exists.sh b/scripts/drone-upload-exists.sh
new file mode 100755
index 0000000000..bc9b112c26
--- /dev/null
+++ b/scripts/drone-upload-exists.sh
@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+#
+# Script used with Drone CI to check for the existence of a build artifact.
+
+if [[ -z ${DRONE_REPO} || -z ${DRONE_PULL_REQUEST} ]]; then
+	echo -e "\n\n\n\n\e[31;1mRequired env variables not specified, likely a tag build so just failing\e[0m\n\n\n"
+	exit 1
+fi
+
+# This file info MUST match the structure of `base` in the `drone-static-upload.sh` script in
+# order to function correctly
+prefix="session-android-"
+suffix="-${DRONE_COMMIT:0:9}-universal.tar.xz"
+
+# Extracting head.label using string manipulation
+echo "Extracting repo information for 'https://api.github.com/repos/${DRONE_REPO}/pulls/${DRONE_PULL_REQUEST}'"
+pr_info=$(curl -s https://api.github.com/repos/${DRONE_REPO}/pulls/${DRONE_PULL_REQUEST})
+pr_info_clean=$(echo "$pr_info" | tr -d '[:space:]')
+head_info=$(echo "$pr_info_clean" | sed -n 's/.*"head"\(.*\)"base".*/\1/p')
+fork_repo=$(echo "$head_info" | grep -o '"full_name":"[^"]*' | sed 's/"full_name":"//')
+fork_branch=$(echo "$head_info" | grep -o '"ref":"[^"]*' | sed 's/"ref":"//')
+upload_dir="https://oxen.rocks/${fork_repo}/${fork_branch}"
+
+echo "Starting to poll ${upload_dir}/ every 10s to check for a build matching '${prefix}.*${suffix}'"
+
+# Loop indefinitely the CI can timeout the script if it takes too long
+total_poll_duration=0
+max_poll_duration=$((30 * 60))	# Poll for a maximum of 30 mins
+
+while true; do
+	# Need to add the trailing '/' or else we get a '301' response
+	build_artifacts_html=$(curl -s "${upload_dir}/")
+
+	if [ $? != 0 ]; then
+		echo -e "\n\n\n\n\e[31;1mFailed to retrieve build artifact list\e[0m\n\n\n"
+		exit 1
+	fi
+
+	# Extract 'session-ios...' titles using grep and awk then look for the target file
+	current_build_artifacts=$(echo "$build_artifacts_html" | grep -o "href=\"${prefix}[^\"]*" | sed 's/href="//')
+	target_file=$(echo "$current_build_artifacts" | grep -o "${prefix}.*${suffix}" | tail -n 1)
+
+	if [ -n "$target_file" ]; then
+		echo -e "\n\n\n\n\e[32;1mExisting build artifact at ${upload_dir}/${target_file}\e[0m\n\n\n"
+	    exit 0
+	fi
+
+	# Sleep for 10 seconds before checking again
+	sleep 10
+	total_poll_duration=$((total_poll_duration + 10))
+
+	if [ $total_poll_duration -gt $max_poll_duration ]; then
+		echo -e "\n\n\n\n\e[31;1mCould not find existing build artifact after polling for 30 minutes\e[0m\n\n\n"
+		exit 1
+	fi
+done