add dockerfile

Dockerfile

@@ -0,0 +1,40 @@
+FROM azul/zulu-openjdk-alpine:11.0.20.1-11.66.19-arm64 AS base
+RUN apk update && apk add maven
+COPY <<EOF /settings/settings.xml
+<?xml version="1.0" encoding="UTF-8"?>
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
+    <localRepository>./.m2</localRepository>
+</settings>
+EOF
+
+FROM base AS deps
+WORKDIR /deps
+COPY pom.xml /deps/
+COPY backend/pom.xml /deps/backend/pom.xml
+COPY webp-io/pom.xml /deps/webp-io/pom.xml
+
+RUN mvn dependency:go-offline -s /settings/settings.xml
+
+FROM base AS build
+WORKDIR /sources
+COPY . /sources/
+COPY --from=deps /deps/.m2 /sources/.m2
+
+RUN mvn clean package -Dmaven.test.skip=true -s /settings/settings.xml
+
+FROM azul/zulu-openjdk-alpine:11.0.20.1-11.66.19-arm64
+
+RUN apk update  \
+    && apk add ffmpeg python3 py3-pip libwebp-tools optipng  \
+    && pip3 install 'lottie==0.6.4' --break-system-packages
+
+# Create the application directory
+RUN mkdir /app
+
+COPY --from=build /sources/backend/target/service.jar /app
+
+WORKDIR /app
+
+CMD [ "java", "-jar", "/app/service.jar" ]

backend/pom.xml

@@ -166,11 +166,16 @@
     </dependencies>
 
     <build>
-        <finalName>${project.artifactId}</finalName>
+        <finalName>service</finalName>
         <sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
         <testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
 
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <version>3.1.1</version>
+            </plugin>
             <plugin>
                 <groupId>org.jetbrains.kotlin</groupId>
                 <artifactId>kotlin-maven-plugin</artifactId>

backend/src/main/kotlin/com/vdsirotkin/telegram/mystickersbot/MyStickersBotApplication.kt

@@ -9,6 +9,31 @@ import org.springframework.scheduling.annotation.EnableScheduling
 @EnableScheduling
 class MyStickersBotApplication
 
+private fun ensureExternalTools() {
+    val runtime = Runtime.getRuntime()
+    runtime.exec("ffmpeg -version").also { it.waitFor() }.exitValue().let {
+        if (it != 0) {
+            throw IllegalStateException("FFmpeg is not installed")
+        }
+    }
+    runtime.exec("optipng -v").also { it.waitFor() }.exitValue().let {
+        if (it != 0) {
+            throw IllegalStateException("OptiPNG is not installed")
+        }
+    }
+    runtime.exec("dwebp -h").also { it.waitFor() }.exitValue().let {
+        if (it != 0) {
+            throw IllegalStateException("WebP tools are not installed")
+        }
+    }
+    runtime.exec("lottie_convert.py -h").also { it.waitFor() }.exitValue().let {
+        if (it != 0) {
+            throw IllegalStateException("Lottie tools are not installed")
+        }
+    }
+}
+
 fun main(args: Array<String>) {
+    ensureExternalTools()
     runApplication<MyStickersBotApplication>(*args)
 }

pom.xml

@@ -13,4 +13,13 @@
         <module>backend</module>
     </modules>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <version>3.1.1</version>
+            </plugin>
+        </plugins>
+    </build>
 </project>